Solve the problem.Kate's kite descends along the curve of y = -2x2 + 20. What is the angle of the descent (with the vertical) when 
A. 83.5°
B. 81.2°
C. 6.5°
D. 4.5°
Answer: C
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Solve the problem.At what interest rate would a deposit of $35,000 grow to $63,774 in 25 years with continuous compounding? Round to the nearest tenth when necessary.
A. 0.4% B. 3.4% C. 2.4% D. 5.4%
?Find the determinant of 
.
?
A. ?-14 B. ?30 C. ?22 D. ?-6 E. ?-18
Solve.From a 15-inch by 15-inch piece of metal, squares are cut out of the four corners so that the sides can then be folded up to make a box. Let x represent the length of the sides of the squares, in inches, that are cut out. Express the volume of the box as a function of x. Graph the function and from the graph determine the value of x, to the nearest tenth of an inch, that will yield the maximum volume.
A. 2.8 inches B. 3.1 inches C. 2.3 inches D. 2.5 inches
Find and simplify the function 
at the given value 
.
?
A. -147 B. -75 C. -55 D. -111 E. -42