Provide the proper response.If f(b) = 4 and f(x) is decreasing on the interval [a, b], then which method of estimating the area under the graph of f(x) and above the x-axis will yield the lowest value? Assume that n = 10 in all cases.
A. Using right endpoints
B. Using midpoints
C. Using left endpoints
D. Cannot be determined
Answer: A
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Evaluate the integral.
A. e-x7 + C
B. -7e-x8 + C
C. - 
e-x7 + C
D. - 
e-x8 + C
Find the perimeter.
A. 366 in. B. 381 in. C. 326 in. D. 308 in.
Solve the problem.Some people must eat a low-sodium diet with no more than 2000 mg of sodium per day. By eating 1 cracker, 1 pretzel, and 1 cookie, a person would ingest 149 mg of sodium. If a person ate 8 pretzels and 8 cookies, he or she would ingest 936 mg of sodium. By eating 6 crackers and 7 pretzels, a person would take in 535 mg of sodium. Which of the following statements is true?
A. A cookie contains 71 mg of sodium. B. A pretzel contains 49 mg of sodium. C. A cracker contains more sodium than a cookie D. A cracker contains 30 mg of sodium.
Round to the nearest thousand.7334
A. 8000 B. 7000 C. 7330 D. 7300