Solve.The cost, c, in dollars of car rental is 9 + .25m, where m is the number of miles driven. Graph the equation and use the graph to estimate the cost of car rental if the number of miles driven is 35.
A. About 14 dollars
B. About 37.25 dollars
C. About 18 dollars
D. About 23 dollars
Answer: C
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Solve the problem.If v = 4i - 4j + k, find a vector perpendicular to both v and i + k.
A. 3i + 2j - 3k B. -4i - 3j + 4k C. 2i + 3j - 2k D. i - j + 3k
Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at 
and 
. The cross sections perpendicular to the x-axis between these planes are squares whose bases run from the semicircle 
to the semicircle 
.
A. 
B. 
C. 
D. 
Solve the problem.Ken is 6 feet tall and is walking away from a streetlight. The streetlight has its light bulb 14 feet above the ground, and Ken is walking at the rate of 4.1 feet per second. Find a function, d(t), which gives the distance Ken is from the streetlight in terms of time. Find a function, 
, which gives the length of Ken's shadow in terms of d. Then find 
.
A. (S ? d)(t) = 6.93t B. (S ? d)(t) = 2.26t C. (S ? d)(t) = 3.08t D. (S ? d)(t) = 3.9t
Use the graph to find the vertex, the axis of symmetry, and the maximum or minimum value of the function.
A. (-3, 2); x = -3; maximum: 2 B. (2, -3); x = 2; maximum: -3 C. (-2, 3); x = 2; maximum: -3 D. (-3, -2); x = -3; maximum: 2