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Math 60 – Basic Math Questions Work out answers to each question without using a calculator. 1. Simplify 12 (5) (13) 3 . 2. Write 0.0000451 in scientific notation. 15. The following histogram is based upon a survey when teens were asked how many hours a day they spent using a computer. 3. What Fahrenheit temperature corresponds 9 to 10C if F C 32 ? 5 4. Simplify: 7 x 2 4 x 8 5. Solve: 4 3 x 5 2 1 2 x 7 3 7. Jack and Donna shared the grocery bill with other roommates. Jack paid one-fifth of the bill and Donna paid one-fourth. Together they spent $63. How much was the grocery bill? 6. Solve: x 8. The cost of my cab ride was $9. This was $5.25 pick-up fee plus $0.75 per mile. How many miles did I go? 9. Evaluate 2 x2 5x for x = 4. 10. At the beginning of the month your bank account had a balance of $1400. You withdrew a constant amount for 20 days. After those 20 days the balance was $250. How much were the daily withdraws? 11. Is the ordered pair (4, 5) a solution to the 1 equation y x 7 ? 2 x 32 12. Solve for x : 14 7 (a) How many teens spent 4 or more hours? (b) How many teens were surveyed? (c) What percentage spent exactly 6 hours? 16. The length of a table is two more than three times the width. If w represents the width, then write an expression for length. 17. Make a table containing 3 solutions to the equation and graph the equation: y 2x 3 . 18. At the store you bought 3 bags of chips and 2 jars of salsa. A jar of salsa costs $2 more than a bag of chips. If you spent $14.25, how much did each bag of chips cost? 19. Give the coordinates of points A and B, which are plotted in the following graph: 13. Charles' cat eats 54 pounds of cat food a month. If there are 16 ounces in 1 pound, then how many ounces is this? 14. A basketball costs $2.50 more than a soccer ball. Together a basketball and soccer ball cost $18.48. How much does a soccer ball cost? 20. The local sales tax is 4%. If Jack buys a calculator that costs $85, how much tax will he be charged?