Meghan has a $18,000 4-year loan with an APR of 6.9%. At the end of the first year, she receives a $1,000 bonus from work and makes an extra payment on her loan. How many months early will her loan be paid off?

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0