Sarah, Robert, and Brooke are in a running club. Three days a week after school, Sarah runs 2.2 miles each day. This week, Robert ran 58 of the total distance that Sarah ran. Also this week, Brooke ran 110% of the total distance that Sarah ran. What is the average distance the club ran this week?

i think 5 miles per hour

step-by-step explanation:

25% is the 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