You buy items costing $650 and finance the cost with a fixed installment loan for 18 months at 7% simple interest per year. a) What is the finance charge?

b) What is your monthly payment?

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

51840000 cm 2

step-by-step explanation:

x = 12

y = 1

for the points!