$3,500 at 4% compounded annually for 8 years

ANSWER

(3,2) and (-1,6)

EXPLANATION

The given equations are:

and

The graph of the first equation is a straight line with slope, -1 and y-intercept 5.

The quadratic function can be rewritten

as

The graph of this function has it's vertex at

We graph the two functions on the same sheet as shown in the attachment.

The solution is the point of intersection of the two graphs.

(3,2) and (-1,6)