Solve.A rectangular box with volume 517 cubic feet is built with a square base and top. The cost is $1.50 per square foot for the top and the bottom and $2.00 per square foot for the sides. Let x represent the length of a side of the base in feet. Express the cost of the box as a function of x and then graph this function. From the graph find the value of x, to the nearest hundredth of a foot, which will minimize the cost of the box.
A. 8.79 feet
B. 8.49 feet
C. 8.83 feet
D. 8.91 feet
Answer: C
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A. 0 B. e9 + e4 + e5 - 1 C. e18 - 1 D. e18 - 3
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The rectangular coordinates of a point are given. Find polar coordinates of the point. Express ? in radians.(0, -
)
A. (-
, 90°)
B. (
, 90°)
C. (-
, 270°)
D. (-
, 180°)