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) = 2x + 3 from x = 0 to x = 2; n = 4
A. 17
B. 13
C. 15
D. 11
Answer: D
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Graph the function as a solid curve and its inverse as a dashed curve.f(x) = 5x 
A. 
B. 
C. 
D. 
For the given investment, assume that there is no opportunity for reinvestment of returns. Find the monthly return, annual return, or annual percentage return as indicated.
Find the monthly return.
A. $1161.00 B. $116.10 C. $11.61 D. $9.68
Find the acceleration of a particle with the given position function. r(t) = 9 sinti+10tj-8 costk
What will be an ideal response?
For the given equation, do the following:(a) Simplify the expression on each side of the equal sign. (b) See if 5 is a solution to both the given equation and the equation formed in part (a).x2 + 3x2 = 12x + 8x
A. (a) 4x2 = 25x; (b) 5 only checks in the given equation. B. (a) 4x2 = 20x; (b) 5 does not check in either equation. C. (a) 3x2 = 20x; (b) 5 only checks in the given equation. D. (a) 4x2 = 20x; (b) 5 checks in both equations.