Question

PLEASE HELP ME!! The 7th grade has already saved $60 for a field trip to Hershey Park. They need to raise at least$720 in order to pay for the trip. They decide to sell T-shirts to raise money. They earn $12toward the trip for every T-shirt they sell.Write the inequality that represents this situationHow many T-shirts must they sell to eam at least $720? Show how you determined your answer

Answer 1

We have to calculate how many T-shirts the hay to sell in order to raise $720, including the $60 dollars they already saved.

They earn $12 for every T-shirt, so the amount of money raised is 12x, being x the number of T-shirts.

Then, 12x has to be at least equal to 720-60=660:

`12x\ge660`

Then, if we divide both sides by 12, we get the number of T-shirts they have to sell:

`\begin{gathered} 12x\ge660 \\ (12)/(12)x\ge(660)/(12) \\ x\ge55 \end{gathered}`

They have to sell at least 55 T-shirts.