The sum of three consecutive integers is 81. What are the integers?
?
A. 78, 79, 80
B. 27, 28, 29
C. 25, 27, 29
D. 26, 27, 28
E. 81, 0, 0
Answer: D
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Use divisibility rules to determine whether the given number is divisible by 2, 3, 5, or any combination of these.4,620
A. 2 B. 2, 5 C. 2, 3, 5 D. 5
Arrange the group of numbers in order, from least to greatest.8.67, 8
, 8.667, 8
A. 8
, 8
, 8.667, 8.67
B. 8
, 8
, 8.67, 8.667
C. 8
, 8.67, 8.667, 8
D. 8
, 8
, 8.667, 8.67
Solve the problem. Round your answer to the nearest tenth, if necessary.A man rode a bicycle for 12 mi and then hiked an additional 8 mi. The total time for the trip was 5 hr. If his rate when he was riding a bicycle was 10 mph faster than his rate walking, what was each rate?
A. Bike: 13 mph; hike: 3 mph B. Bike: 11.5 mph; hike: 1.5 mph C. Bike: 12 mph; hike: 2 mph D. Bike: 14.5 mph; hike: 4.5 mph
Solve the problem.A yoga studio will offer a workshop provided that at least 20 people sign up. Beginning students require more attention than experienced students and the number of assistants in the class will be limited to three. For this reason, the teacher would like the number of experienced students to be at least twice the number of beginners. Set up and graph a system of inequalities for the situation, letting x represent the number of beginning students and y the number of experienced students. 
A. x + y ? 20
y ? 2x
B. x + y ? 20
y ? x + 2
C. x + y ? 20
y ? 2x
D. x + y ? 20
y ? 2x