Goodness I keep getting this wrong?

Which expression and diagram represent “renee biked four times as far this month as last month”?

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

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?