Simplify the expression by using the order of operations.5 ? 
? 
÷ 4 ? 
+ 3
A. 300
B. 22
C. 303
D. 78
Answer: C
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xy - 5yz + 7x - 35z
A. (y + 5)(x - 7z) B. (y + 7)(x - 5z) C. (y - 7)(x + 5z) D. (y - 5)(x + 7z)
Solve the problem.A game involves choosing 4 numbers from the numbers 1 through 13. In how many ways can this be done?
A. 723 B. 17,160 C. 695 D. 715
Combine. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked. Janel Leith drives her moped for a number of hours at 30 miles per hour. When traffic slows, she drives at 20 miles per hour. She travels at 20 miles per hour for one-half hour longer than she traveled at 30 miles per hour. The difference in the distance traveled at 20 mph and 30 mph is 18 miles. Determine how long Janel traveled at 20 miles per hour.
A. 0.9 hr B. 1.8 hr C. 1.2 hr D. 3.6 hr