Use I = Prt for simple interest to find the indicated quantity.P = $13,500; t = 4 months; I = $517.50. Find r.
A. 11.7%
B. 7.7%
C. 3.8%
D. 11.5%
Answer: D
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Solve the problem.Suppose a business can sell x gadgets for p = 250 - 0.01x dollars apiece, and it costs the business 
dollars to produce the x gadgets. Determine the production level and cost per gadget required to maximize profit.
A. 111 gadgets at $248.89 each B. 10,000 gadgets at $150.00 each C. 11,250 gadgets at $137.50 each D. 13,750 gadgets at $112.50 each
Divide as indicated or state that the division is undefined.14 ÷ 
A. 49 B. -49 C. 4 D. -4
Find the missing numbers.
A. (a) = 3, (b) = 1, (c) = 8, (d) = 5 B. (a) = 2, (b) = 2, (c) = 6, (d) = 5 C. (a) = 3, (b) = 1, (c) = 7, (d) = 4 D. (a) = 2, (b) = 1, (c) = 7, (d) = 5
The slope of the tangent line to the graph of the exponential function 
at the point (0, 1) is 
Estimate the slope to three decimal places.
What will be an ideal response?