PLS HELP ILL GIVE BRAINLIEST. NO FAKES THESE ARE THE REST OF MY POINTS.
Your parents have decided that it is time for you to have some responsibility by paying for your own cell phone bill. You have a job, but you remain on a strict budget. For your cell phone, you have planned to spend no more than $25 per month. You need to determine which company, My Mobile or Cell For You, is the best for you The My Mobile "Pay-As-You-Go" monthly plan consists of a charge of $19.99 for unlimited calling minutes and two cents for each text message. The Cell For You "Pay-Per-Use" plan consists of a charge of $15.99 for unlimited calling and 10 cents for each text message. Based on the info above which is the best deal.

Must show work.​

0.02040816326

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

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: