Question

David works at the T-shirt Shack selling tees. The equation y = 15x – 520 represents the profit that the T-shirt Shack makes for each t-shirt sold, where y is the total profit and x is the number of t-shirts sold.

• How many t-shirts does the T-shirt Shack need to sell to make a profit of $140?

Answer 1

Explanation:

y = 15x - 520...and y represents the total profit

so if he wants to make a total profit of 140, sub in 140 for y and solve for x

140 = 15x - 520

140 + 520 = 15x

660 = 15x

660/15 = x

44 = x <=== they need to sell 44 t-shirts to make a profit of $ 140