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Chapter sumary 6

Tham khảo tài liệu 'chapter sumary 6', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CBEST PRACTICE EXAM 2 6. An average of 90 is needed on five tests to receive an A in a class. If a student received scores of 95 85 88 and 84 on the first four tests what score will the student need to achieve on the fifth test to get an A a. 90 b. 92 c. 94 d. 96 e. 98 10. If a school buys three computers at a b and c dollars each and the school gets a discount of 90 which expression would determine the average price paid by the school a 0.9 X a b c b a b c c. a b c X 0.9 d a b c 3 X a b c 7. A bag of jellybeans contains 8 black beans 10 green beans 3 yellow beans and 9 orange beans. What is the probability of selecting either a yellow or an orange bean 1 a. 10 b. 1 c. 4 d. 1 e. 3 11. Roger wants to know if he has enough money to purchase several items. He needs three heads of lettuce which cost .99 each and two boxes of cereal which cost 3.49 each. He uses the expression 3 X 0.99 2 X 3.49 to calculate how much the items will cost. Which of the following expressions could also be used a. 3 X 3.49 .99 - 3.49 b. 3 X 3.49 .99 c. 2 3 X 3.49 .99 8. What is the perimeter of a pentagon with three sides of 3 inches and the remaining sides 5 inches long a. 19 inches b. 9 inches c. 14 inches d. 12 inches e. 24 inches d. 2 X 3 3.49 X .99 e. 3 X 3.49 .99 3.49 12. Rosa finds the average of her three most recent golf scores by using the following expression where a b and c are the three scores 3 X 100. Which of the following would also determine the average of her scores a. a b 3 X 100 9. What is the result of multiplying 11 by 0.032 a. 0.032 b. 0.0352 c. 0.32 d. 0.352 e. 3.20 b. a b c TÕÕ c. a b c X 7j00 aXbX c d. 3 100 a b c e. 3 100 213 CBEST PRACTICE EXAM 2 13. What is 3 divided by - 2 13 a- 15 b. 13g c- 136 d. 1 2 e. 13 age of the group of teachers in the study speaks fluent Spanish a. 12 percent b. 7.3 percent c. 8.3 percent d. 9.3 percent e. 14 percent 14. A 15 cc dosage of a medication must be increased by 20 percent. What is the new dosage a. 17 cc b. 1g cc c. 20 cc d.