1. In mathematics, a ratio is a comparison of two numbers by ______. A. addition B. division C. multiplication D. subtraction Hint 2. An equation stating that two ratios are equal is called a(n) ______. A. cross product B. equivalent equation C. rate D. proportion Hint 3. Twelve is what percent of 50? A. 6% B. 24% C. 48% D. 12% Hint 4. 15% of what number is 10.2? A. 0.68 B. 1.53 C. 68 D. 147 Hint 5. Soundous needs a 50% saline solution. She has 60 milliliters of a 40% solution. How many milliliters of a 70% solution should she add to obtain the required 50% solution? A. 270 milliliters B. 90 milliliters C. 180 milliliters D. 30 milliliters Hint 6. Two die are rolled. What is the probability that the sum of thetwo die is 8? A. B. C. D. Hint 7. If two events cannot occur at the same time, the events are called ______. A. exclusive B. mutually inclusive C. mutually exclusive D. inclusive Hint 8. The scale drawing of a triangle is shown below. If the perimeter of the actual triangle is 35 feet, what is the scale? A. 2 in. = 3 ft B. 1 in. = 7 ft C. 2 in. = 7 ft D. 1 in. = 3 ft Hint 9. Leon wants to build herself a bookshelf. She draws a scale drawing of the bookshelf, shown below. What will the height of the actual bookshelf be if the scale of the drawing is 1 cm = 2 ft? A. 9.8 ft B. 8.4 ft C. 3.2 ft D. 2.1 ft Hint 10. 8 is 40% of what number? A. 32 B. 20 C. 2 D. 3.2 Hint 11. Daniel is buying flowers for his friend Inali. If the flowers cost \$13.99 and sales tax is 5.75%, how much will Daniel spend on the flowers? A. \$14.79 B. \$0.80 C. \$80.44 D. \$13.19 Hint 12. Refer to the graph, what was the percent decrease in carbon monoxide emission from 1970 to 1980? A. 56% B. 14% C. 23% D. 35% Hint 13. The graph shows the distribution of eye color at Moby High School. If you randomly meet a student from the school, what is the probability of he or she having blue or green eyes, to the nearest percent? A. 9% B. 30% C. 14% D. 65% Hint 14. Pia is going to ask Toya to go to the movies with him on Friday and Amanda to go out to dinner with him on Saturday. He figures there is a 25% chance that Toya will say yes and a 58% chance that Amanda will say yes. What is the probability that he will get a date this weekend? A. 68.5% B. 83% C. 97.5% D. 75.75% Hint