Eri went for a jog she jogged 7/8 of a mile in 1/4 of an hour what was her job in speed in miles per hour

Hi!

We will solve this like this:

7/8 of a mile in 1/4 of an hour, that means that in one hour, she will run 4 * 7/8 = 28/8 = 14/4 = 7/2 = 3,5 miles per hour.

Hope this helps!

answer: it's d

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