Kelly can work for her dad and make $6.00 per hour, or she can work for Jana's
Mowing service and make $14.00 per hour. If she needs to make at least $84.00,
and can only work 10 hours total. She can work at most 5 hours for Jana's
Mowing Service. Write a system of equations that represents all the possible
solutions.

Step-by-step explanation:

x=jana's mowing service

y=dad

"a" determine whether sage found the correct quotient. show your work

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