3

Harold bought 18 toys for his nieces and nephews. The least expensive toy cost $7.12, and the most expensive toy cost $10.88. Which is the best estimate for the total amount Harold spent on the toys he bought for his nieces and nephews?

A.

$201.00

B.

$270.00

C.

$124.00

D.

$162.00

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min