Find the average rate of change of on the interval [1,5].
a. 1
b. 3
c. 8
d. 12
b. 3
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Solve the problem.One pump can drain a pool in 11 minutes. When a second pump is also used, the pool only takes 7 minutes to drain. How long would it take the second pump working alone to drain the pool? (Round your answer to the nearest tenth, if necessary.)
A. 4.3 min B. 73 min C. 20.5 min D. 19.3 min
Find a formula for the nth term of the arithmetic sequence shown in the graph.
A. an = n + 2 B. an = n + 1 C. an = n - 3 D. an = 3 - n
Solve the problem.A 5-foot tree casts a 13-foot shadow and creates a right triangle, as shown. At the same time, a nearby building casts a 78-foot shadow, creating a similar right triangle. What is the height of the building?
A. 42 ft B. 202.8 ft C. 15.6 ft D. 30 ft
Evaluate.log4 
A. 
B. -3
C. 3
D. - 