Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = e-x + 2 from x = -2 to x = 6; n = 4
A. 22.29
B. 16.02
C. 33.09
D. 18.31
Answer: D
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Solve the problem.A swimming pool has a rectangular base 12 ft long and 24 ft wide. The sides are 7 ft high, and the pool is full of water. How much work will it take to lower the water level 2 feet by pumping the water out over the top of the pool? Assume that the water weighs 
Give your answer to the nearest ft ? lb.
A. 440,294 ft ? lb B. 17,971 ft ? lb C. 880,589 ft ? lb D. 35,942 ft ? lb
Find the GCF for the list.7b2, 7b2k2, 13b5
A. 7b2k2 B. b2k2 C. b2 D. 7b2
Solve the problem.The function f(x) = |x|- 5 is not one-to-one.(a) Find a suitable restriction on the domain of f so that the new function that results is one-to-one.(b) Find the inverse of f.
What will be an ideal response?
Find the circumference of the circle. Use 3.14 or 
for ? as indicated.Use 
for ?.
A. 9
ft
B. 19
ft
C. 30
ft
D. 4
ft