Mary needs to save $540 for a computer. it was used and the sales man told her he would sell it for 1\3 off the marked price. what is price of the computer be after the mark down?

$360

Step-by-step explanation:

Initial price = $540

Less ⅓ off  = -  180

Sale price  = $360

Note: ⅓ × $540 = $180

The  price of the computer is $360 after the markdown.

529 and 531

step-by-step explanation:

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