Christopher’s back yard is in the shape of a trapezoid. the bases of his back yard are 30 and 40 feet long. the area of his back yard is 525 square feet. write and solve an equation to find the height of christopher’s back yard.

Ifurniture stores having a weekend sale and is offering 20% discount on patio chairs and table the sales tax on furniture is 6.25 using function composition how can you represent the total amount a that you would need to pay for this furniture that cost x dollars

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

20 ! brainliest ! add and simplify your answer.