Match the given graph with its equation.
A. 
- 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
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of the x-axis.
A. 2 e17 B. 2 ln 17 C. ln 17 D. 0
Translate to a system of three equations; then solve.Michael's bank contains only nickels, dimes, and quarters. There are 42 coins in all, valued at $3.75. The number of nickels is 6 short of being three times the sum of the number of dimes and quarters together. How many dimes are in the bank?
A. 5 B. 7 C. 30 D. 10
Evaluate the logarithm without the use of a calculator.log9 
A. -81 B. -3 C. 81 D. 3
Solve the problem.An airplane is sighted at the same time by two ground observers who are 2 miles apart and both directly west of the airplane. They report the angles of elevation as 10° and 
How high is the airplane?
A. 1.35 mi B. 0.75 mi C. 0.63 mi D. 0.35 mi