Corey drew a picture that he had on his phone on a bigger canvas. The picture was 5 inches tall and 3 inches wide. The scale factor he used was 5. What are the dimensions of the drawing?

25:15

Step-by-step explanation:

5 x 5

3 x 5

the correct answer is the second option

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