Approximate the area under the curve and above the x-axis using n rectangles. Use right endpoints.f(x) = x2 + 2 from x = 1 to x = 4; n = 6
A. 26.88
B. 24.88
C. 30.88
D. 28.88
Answer: C
Mathematics
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The following table shows the total cost C of joining a music club and downloading s songs. Find a linear model for the total cost as a function of songs downloaded. Round the slope to three decimal places, if necessary. x 2 8 14 20 y 12.16 16.71 21.26 25.81?
A. 
B. ?
C. ?
D. ?
Mathematics
Multiply.-6(4m - 9)
A. 54m - 24 B. -54m + 24 C. -24m - 54 D. -24m + 54
Mathematics
Solve.Kerry owed $160, borrowed an additional $100, and paid back $65. How much did she still owe?
A. $125 B. $325 C. - $195 D. $195
Mathematics
Find the derivative.y = 2 - 9x3
A. 
= 2 - 27x2
B. 
= -27x
C. 
= -18x2
D. 
= -27x2
Mathematics