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Review your 1.1-1.3 Quiz Make sure there are no grading errors on it Quiz corrections If there is anything you got wrong, it is worth asking about Learn from your mistakes Concepts will reappear throughout all of Algebra 1(A/B) 1. Simplify 8n + 9 + 3n. 2. Use the Distributive Property to evaluate 5(z – 3) + 4z. • • • Check solutions to equations. Solve equations with one variable Solve equations with two variables. Equation: An equation is made when an equal sign is used between two expressions creating a right and left side of the equation. 2+4 6 2+4=6 Room must be silent Indicate your answer by: Putting Putting up if you see an up if you see an When you take an equation and replace the variables with numbers, you can make the statement either or . If it becomes true, then the number is called a of the equation. Equation: Is the number 1 a solution to the equation? Is the number 2 a solution to the equation? Is the number 3 a solution to the equation? Find the solution set for 4a + 7 = 23 if the replacement set is {2, 3, 4, 5, 6}. Find the solution set for 6c – 5 = 7 if the replacement set is {0, 1, 2, 3, 4}. A. {0} B. {2} C. {1} D. {4} This means you found of an equation. x+2=5 Ask yourself the question, “What number can be added to 2 to obtain 5?” Simplify the equation. 2. Combine like terms on each side. 3. Move all constants to one side. 4. Move all variables to the other side. 5. Divide both sides of the equation by the coefficient of the variable. EXAMPLE: Solve for x. 1. (3 2) 5 x x 13 Solve 3 + 4(23 – 2) = b. Raise you hand and I will give you a notecard to put your table from the replacement set on. You will receive 2%pts added to your quiz. Thanks for doing what I ask!! Solve (42 – 6) + f – 9 = 12. Solve 4 + (32 + 7) ÷ n = 8. Solve 4n – (12 + 2) = n(6 – 2) – 9. Solve 2n + 72 – 29 = (23 – 3 • 2)n + 29. Dana pays $16 per month for a gym membership. In addition, she pays $2 per Pilates class. Write and solve an equation to find the total amount Dana spent this month if she took 12 Pilates classes. c = 2p + 16 SHOPPING An online catalog’s price for a jacket is $42.00. The company also charges $9.25 for shipping per order. Write and solve an equation to find the total cost of an order for 6 jackets. A. c = 42 + 9.25; $51.25 B. c = 9.25j + 42; $97.50 C. c = (42 – 9.25)j; $196.50 D. c = 42j + 9.25; $261.25 1.5 Practice (ALL) Solve (5 + 8 ÷ 4) + 3k = 3(k + 32) – 89.