The robotics club is selling shirts for a fundraiser. They have purchased a box of shirts for $400 at $5 per shirt. To promote their fundraiser, they have also spent $60 on advertising. Which equation can the club use to calculate the selling price per shirt if they want to make a profit of $300? Select all that apply.

400x=5x+360
80x-460=300
80x+300=460
400x-60=300
80x=760
5x=300
2000x=360
400/5x=300

idk

step-by-step explanation:

use that smart brain

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:

the true ones are a b and d

13664

step-by-step explanation:

=cross multiply

=100 x = 13664