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 = 3 and x = 7 using the midpoint sum with four rectangles of equal width.
A. 126
B. 117
C. 105
D. 86
Answer: C
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Compute the gradient of the function at the given point.
A. ?f = 
j - 
k
B. ?f = - 
j + 
k
C. ?f = - 
j - 
k
D. ?f = - 
j - 
k
Determine i) the domain of the function, ii) the range of the function, iii) the domain of the inverse, and iv) the range of the inverse.f(x) = 
A. f(x): D = 
, R = 
;
f-1(x): D is all real numbers, R = 
B. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
C. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
D. f(x): D = 
, R is all real numbers;
f-1(x): D is all real numbers, R = 
Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation: 
What is the revenue to the nearest dollar when 600 units are sold?
A. $130,000 B. $10,000 C. $8571 D. $111,429
Solve the problem.A radioactive substance has a decay rate of 1.9% per minute. Of an initial amount of 1000 g of the substance, how much will remain after 80 minutes?
A. 218.7 g B. 196.8 g C. 295.3 g D. 245 g