Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 4 and x = 8 using a lower sum with four rectangles of equal width.
A. 165
B. 149
C. 174
D. 126
Answer: D
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Solve.Find the sum of the first 661 natural numbers.
A. 436,921 B. 437,582 C. 218,791 D. 218,130
Solve the problem.Michael decides to walk to the mall to do some errands. He leaves home, walks 2 blocks in 8 minutes at a constant speed, and realizes that he forgot his wallet at home. So Michael runs back in 4 minutes. At home, it takes him 3 minutes to find his wallet and close the door. Michael walks 3 blocks in 10 minutes and then decides to jog to the mall. It takes him 10 minutes to get to the mall which is 5 blocks away. Draw a graph of Michael's distance from home (in blocks) as a function of time. 
What will be an ideal response?
Solve the problem.Decide which of the rational functions might have the given graph. 
A. f(x) = x + 2
B. f(x) = x + 
C. f(x) = x + 
D. f(x) = 2x + 
Find the part.8.0% of 1100 hours
A. 9 hours B. 880 hours C. 88 hours D. 8800 hours