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Chapter 12 Review SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Provide an appropriate response. 1) Simplify the expressions (2x)0 and (2x0) and explain how you arrived at your answers. 1) _____________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Multiply or divide and write scientific notation for the result. 2) ( 3 × )( 8 × A) 24 × ) 2) _______ B) 2.4 × Multiply. 3) ( 3x + 2)(x + 8) A) 3x2 - 1x + 16 C) 24 × D) 2.4 × 3) _______ B) x2 + 26x - 1 C) x2 + 16x + 26 D) 3x2 + 26x + 16 4) 5x5( 11x3 - 7) 4) _______ A) 55x8 - 35x5 B) 55x3 - 35 C) 20x5 D) 55x8 - 7 Express using positive exponents. Then simplify. 5) A) 5) _______ B) 81 C) D) -81 Collect like terms and then arrange in descending order. 6) 3 +5 A) 12 + 2 B) 5 +2 +7 6) _______ C) 7 +5 D) 12 Add. 7) (r + 5s - 5) + ( -3r + s) + (s + 3) 7) _______ A) -4r + 7s - 2 B) -2r + 6s - 2 C) -2r + 7s - 2 D) -3r + 5s - 2 8) 8) _______ A) 1.53 - 1.13 + 0.64 C) 1.53 - 2.77 - 0.36 + 0.33x - 1.89 + 0.79x - 1.89 B) 1.53 - 2.13 - 0.36 D) 1.53 - 2.13 - 0.36 + 0.33x - 1.89 + 0.33x - 1.89 Solve the problem. 9) The polynomial 0.041h - 0.018A - 2.69 can be used to estimate the lung capacity, in liters, of a female with height h cm and age A years. Find the lung capacity of a 25-year-old woman who is 173 cm tall. Round to the nearest liter. 9) _______ A) 4 liters B) -5 liters C) 64 liters D) 10 liters Multiply. 10) 10x7( -12x6 + 8x4 - 9) 10) ______ A) -120x13 + 80x11 - 90x7 B) -120x13 + 8x4 - 9 C) -120x13 + 80x11 D) -120x6 + 80x4 - 90 Subtract. 11) ( 0.9 - 0.1 + 0.8) - ( 3.9 + 1.6x - 2.5) 11) ______ A) -3 - 0.1 - 1.6x + 3.3 B) -3 - 0.8 - 1.7 C) -3 - 0.1 + 1.6x + 3.3 D) -3 - 0.1 - 1.6x - 1.7 12) 3 +8 +1 12) ______ A) 2 + 14 C) 2 + 2 + 4x + 1 B) 2 + 14 + - 3x - 4x + 1 D) 2 + 14 + - 4x + 1 - Evaluate. 13) when m = 4 A) 4 3 B) 64 C) 12 13) ______ D) 2 14) - , when p = 3 14) ______ A) 81 B) 5 C) -81 D) 12 Multiply. 15) A) 15) ______ B) + 16) (w - z)( A) + 3w C) - 2w C) + + 3wz) + - 3 + 2 zz- + c+ D) 2c + 16) ______ B) + 2w - 2 D) - 3w + 3 Express using positive exponents. Then simplify. 17) x-8 17) ______ A) x8 B) 8x C) D) Divide and simplify. 18) 18) ______ A) B) C) D) zz- c+ Identify the polynomial as a monomial, binomial, trinomial, or none of these. Give its degree. 19) 8x 19) ______ A) Monomial, degree 0 B) Monomial, degree 1 C) Binomial, degree 0 D) Monomial, degree 8 Solve the problem. 20) Find a polynomial for the perimeter of the figure. 20) ______ A) 22z + 16 B) 26z + 8 C) 26z + 16 D) 42z Multiply mentally. 21) ( 6 +5 A) 36 + 30 C) 36 21) ______ + 25 B) 36 + 25 D) 36 + 60 + 60 + 25 + 25 Evaluate the polynomial. 22) 46 - 2x2 + 2x3, when x = -2 A) 10 B) 34 C) 22 D) 12 22) ______ Collect like terms. 23) -x+ 9+ A) + 8x + 15 + 9x - 6 B) 23) ______ + 8x + 3 Identify the missing terms in the polynomial. 24) -2 A) 24) ______ -term, x-term, 0-degree term C) x-term D) -term, x-term B) none C) + 10x+ 3 D) + 8x + 3 Divide. 25) ( 24x7 + 48x5 + 56x2) ÷ ( -8x2) 25) ______ 7 5 2 5 3 A) -3x - 6x - 7x B) 24x + 48x + 56 C) -3x5 - 6x3 - 7 D) -3x5 + 48x5 + 56x2 Give the coefficient and degree of the term. 26) -8y10 26) ______ A) 10, 8 B) 10, -8 C) 8, 10 D) -8, 10 Evaluate. 27) A) 24 when m = 6 B) 10 C) 5 27) ______ D) 1296 Collect like terms. 28) 6x9 + 3x9 - 5x9 28) ______ 9 9 A) 4x B) -90x C) 4x27 D) Can't be simplified Evaluate the polynomial. 29) 10x2 + 7x + 2, when x = -2 A) 28 B) 24 C) -32 D) 18 29) ______ Multiply. 30) A) 30) ______ t+ + B) C) + D) - + t+ Evaluate the polynomial. 31) 6x + 3, when x = 931) ______ A) 9 B) 108 C) 57 D) 51 Collect like terms. 32) 8x5 - 6x5 32) ______ A) 10x B) Can't be simplified C) 2x5 D) 2x10 Multiply. 33) ( 2x - 12)( 2x - 12) 33) ______ A) 2x2 - 49x + 144 B) 4x2 - 48x + 144 C) 2x2 - 48x - 49 Identify the terms in the polynomial. 34) 4 - 6 - 4x - 2 A) 4 , 6 , 4x, 2 C) 4 , -6 , -4x, -2 D) 4 Multiply. 35) (x + 2)(x - 4) B) 4 34) ______ , 6, , -6, 35) ______ , 4, x, 2 , -4, x, -2 D) 4x2 + 144x - 48 A) - 2x - 8 B) - 5x - 8 C) - 2x - 2 D) x - 2x - 8 Evaluate the polynomial. 36) 2 y - x for x = -3, y= 1, and z = 2 A) 42 B) 60 C) 18 D) -6 36) ______ If the number in the statement is written in scientific notation, write it without exponents. If it is written without exponents, write it in scientific notation. 37) A computer can do one calculation in 1.4 × 10-7 seconds. 37) ______ A) 14,000,000 B) 0.000014 C) 0.00000014 D) 0.000000014 Evaluate. 38) The volume of a cube with sides of length s is given by V = 38) ______ A) 882 m3 B) 441 m3 C) 63 m3 Multiply. 39) ( 18 A) 1 )(0) B) 18 39) ______ C) 0 D) 18 Multiply mentally. 40) ( -13 + 7x)( 13 + 7x) 40) ______ 2 2 A) 49x - 182x - 169 B) 49x - 169 C) x2 - 169 D) 49x2 + 182x - 169 Collect like terms. 41) 6 z2 + 11 z2 A) 17 z2 41) ______ B) 17 z4 C) 66 z4 D) 66 z2 D) 9261 m3 . Find the volume of the cube. 1) (2x)0 = 1, because the exponent is applied to the entire quantity in the parentheses. (2x0) = 2 because the exponent is applied only to the x. 2) D 3) D 4) A 5) B 6) C 7) C 8) D 9) A 10) A 11) A 12) A 13) B 14) C 15) C 16) C 17) C 18) C 19) B 20) C 21) D 22) C 23) D 24) A 25) C 26) D 27) D 28) A 29) A 30) D 31) C 32) C 33) B 34) C 35) A 36) A 37) C 38) D 39) C 40) B 41) A