Calculate the arc length of the indicated portion of the curve r(t).r(t) = 11t4i + 10t4j + 2t4k, 1 ? t ? 2
A. 3375
B. 843.75
C. 56.25
D. 225
Answer: D
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Write an equation of the line described.Through (8, -4), perpendicular to x = -9
A. y = -4 B. y = 8x - 4 C. y = 8 D. y = 4
Solve the problem.The cost of a rental car for the weekend is given by the function C(x) = 137 + 0.25x, where x is the number of miles driven. Find and interpret the C-intercept of the graph of this function.
A. 0.25; There is a flat rate of $0.25 to rent a car in addition to the charge for each mile driven. B. 0.25; The cost of the rental car increases by $0.25 for each mile driven. C. 137; There is a flat rate of $137 to rent a car in addition to the charge for each mile driven. D. 137; The cost of the rental car increases by $137 for each mile driven.
Plot the point whose polar coordinates are given.(-4, 2?/3)
A. 
B. 
C. 
D. 
The tangent line to the graph of 
at 
is shown. On the tangent line, P is the point of tangency and A is another point on the line. Find the instantaneous rate of change of 
style="vertical-align:middle;" /> at P.
?
?
A. -3
B. 3
C. -4
D. -5
E. does not exist