Marsha is charging her phone service one data package charges an initial fee $50 and $13.25 per month the other has no initial fee but charges $25.75 per month for the same data package after how many months with marsha have paid the same amount of it or data package

Month 4:13.25*4=53. 53+50=103

Month 4:25.75*4=103

They both cost $103 on month 4

Thank you ❤️

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

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