At a furniture shop, Xavier earned $97.60 in commission when he sold a desk for $1,220. What was the percentage rate of commission?

Enter the answer as a whole number

1/800 is the right answer

80% of the cookies

step-by-step explanation:

i think it is 18

step-by-step explanation:

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)