If de = 4x + 10, ef = 2x-1, and df = 9x-15, find df

Explain how you can use the associative property to evaluate (7x50)x4.

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)