Find the value of the expression

(688 − c) · 222

for c = 684.

(688-684) x 222

You have to do what’s in the parentheses first because of PEMDAS

688-684=4

Then you have to multiply

4x222

=888

i'm sure goog can you get that answer

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