Simplify. (Assume all variables are nonzero.)
4
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.The chart represents the amount of fuel consumed by a machine used in manufacturing. The machine is turned on at the beginning of the day, takes a certain amount of time to reach its full power (the point at which it uses the most fuel per hour), runs for a certain number of hours, and is shut off at the end of the work day. The fuel usage per hour of the machine is represented by a periodic function. When does the machine first reach its full power?
A. After 2 hours B. After 14 hours C. After 4 hours D. After 7 hours
Translate the sentence into an equation. Use x to represent the unknown number. Do not solve.If 42 is increased by a number, the result is two-thirds of the number.
A. 42x = 
x
B. 42x = 
+ x
C. 42 + x = 
x
D. 42 + x = 
+ x
Solve the problem.A group of 9 friends are going to a concert. Tickets cost $14 each and they pay an additional $7 per person to upgrade their tickets to the front row. What is the total cost for all of their tickets?
A. $63 B. $882 C. $189 D. $199
Calculate.
× 117.4 - 
× 27.51
A. 47.696 B. 49.096 C. 37.296 D. 1603.833