First-grade student, Noah, has set up a lemonade stand in his front yard. It cost $10 for the initial supplies, and it costs him $0.05 for each cup of lemonade he makes. He is selling his lemonade for $0.50 per cup. How
many cups of lemonade must Noah sell in order to not lose any money? Write a system of linear equations
that models Noah's expenses and revenue. Let c represent the number of cups of lemonade sold, and let y
represent the total expenses or total revenue.

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

show us the triangle so we can answer it