Please help me answer this for a test and please explain reasoning behind your answer.

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )