What word phrase can you use to represent the algebraic expression 8z?

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom

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