Translate to a system of two equations, then solve.From a point on a river, two boats are driven in opposite directions, one at 8 miles per hour and the other at 9 miles per hour. In how many hours will they be 85 miles apart?
A. 6 hours
B. 5 hours
C. 7 hours
D. 1 hour
Answer: B
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Use series to evaluate the limit.
A. 0
B. 9
C. 
D. 
If the number given is a mixed number, convert it to a fraction. If the number is given as a fraction, convert it to a mixed number.
A. 
B. 
C. 
D. 
Write an algebraic equation and use it to solve the problem.A hot air balloon spent several minutes ascending. It then stayed at a level altitude for three times as long as it had ascended. It took 5 minutes less to descend than it did to ascend. The entire trip took one hour and 20 minutes. For how long was the balloon at a level altitude?
A. 17 minutes B. 29 minutes C. 12 minutes D. 51 minutes
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
+ 5
A. 
B. 
C. 
D. 