A loan was taken out for $318 at a rate of 9% and the interest is $171.72, how long was loan for? What was the principal if you eamed $5.05 in interest after having your money invested for 1 year at 5%

Theres 2 sorry

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)

the answer to this is a. a^2 + b^2 = c^2