F(x)=x^2 what is g(x)

Find the balance at the end of 4 years if 1000 is deposited at the rate of

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form