The science club wants to buy a t-shirts for the organization. They have a budget of 120. Plain white T-shirts cost three dollars and a red T-shirt with writing cost six. There are 20 students in the club all are not sure if they are going to purchase a T-shirt. Write and graph a system of inequalities to model the number of t shirts the club can purchase to stay under budget

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

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

step-by-step explanation:

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step-by-step explanation: