A club decides to sell t-shirts for $15 as a fundraiser. It cost $20 plus $9 per t-shirt to make the t-shirts. Write and solve an equation to find how many t-shirts the club needs to make and sell in order to profit at least $152?

A. 15x - (9x+20) greater than or equal to 150; x greater than or equal to 28.33

B. 15x-9x + 20 greater than or equal to 150; x greater than or equal to 20

C. (8x+20) - 15x greater than or equal to 150; x greater than or equal to 20

D. 15x - 9 (x+20) greater than or equal to 150; x greater than or equal to 20

Question

Mathematics

Leia

30 December, 13:55

A club decides to sell t-shirts for $15 as a fundraiser. It cost $20 plus $9 per t-shirt to make the t-shirts. Write and solve an equation to find how many t-shirts the club needs to make and sell in order to profit at least $152?

A. 15x - (9x+20) greater than or equal to 150; x greater than or equal to 28.33

B. 15x-9x + 20 greater than or equal to 150; x greater than or equal to 20

C. (8x+20) - 15x greater than or equal to 150; x greater than or equal to 20

D. 15x - 9 (x+20) greater than or equal to 150; x greater than or equal to 20

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Answers (1)

Know the Answer?

Yahir Lawrence · Answer 1

The general equation for profit is written below:

Profit = Revenue - Total Cost

Revenue is the total sales you get while total cost includes the capital and other variable costs.

Letting x be the number of t-shirts, the revenue would be 15x, while the total cost is (20 + 9x). So, the profit equation becomes:

150 ≤ 15x - (20 + 9x)

The ≤ symbol means that the right side of the equation must be equal or greater than 150 so that you can reach your goal profit.

Solving for x,

150 + 20 ≤ 15x - 9x

x ≥ 28.33

Hence, the answer is A.