Since we don't have the measurements for the trapezoid, we can't find the exact cost. However, I can explain how to solve the problem.
First, you need to find the the total area of the pool cover. Since it is in the shape of a trapezoid, use the formula below.
A = 0.5(h)(the sum of the bases)
Once you have the area, multiply by 0.79 and you will have the cost.
Graphed using the given range equation. The shaded area is the possible range, extending to infinity, infinity from 0, -1.
1 Collect like terms
(−y3+4y3)+(−7+4)+(11x2+2x2)
2 Simplify 3y3−3+13x2 to:
3{y}^{3}-3+13{x}^{2}
Answer: 3y^3−3+13x^2
Tap on it and that's the answer.
