I have no idea and I have tried doing this one problem for like 1hr If a loan is taken out for $318 at 9% and costs $171.72, how long was the loan for?

step-by-step explanation: where's the phrase?

answer: approximately 206 bones

i hope this u out a branlist and a would be greatly appreciated :

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