Sara borrowed 500$ for four years at 3% interest compound3d annually . total amt she will pay back.?

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

How do i solve uniform motion problems?

Ineed with math stuff it involves graphs