Question

An electrician charges a one-time fee of $75 plus $25 for each hour of service. If h is the number of hours and t is the total amount billed to the customer, then the variables are related by the equation t = 25h + 75.

Which variable is the independent variable?

A.
t

B.
There is no relationship between the variables.

C.
h

Answer 1

independent variable means a variable (often denoted by x ) whose variation does not depend on that of another.

So the dependent variable is C. h