If tina cuts a lawn by herself, she can finish in 5 hours. if bill cuts the same lawn by himself it takes him two hours longer than tina. how long will it take them both working together?

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?

The function p(x) = –2(x – 9)2 + 100 is used to determine the profit on t-shirts sold for x dollars. what would the profit from sales be if the price of the t-shirts were $15 apiece?