Question

Mrs. Williams is deciding between two field trips for her class. The Science Center charges $110 plus $7 perstudent. The Dino Discovery Museum simply charges $9 per student. For how many students will the ScienceCenter charge less than the Dino Discovery Museum?

Answer 1

Answer is

Option B

Given

The Science Center charges $110 plus $7, student

The Dino Discovery Museum simply charges $9 per student.

`\begin{gathered} \text{Science center I.e C=110+7s} \\ \text{Discovery museum i.e C=9s} \\ 110+7s<9s \\ \text{collect the like terms} \\ 110<9s-7s \\ 110<2s \\ \text{rewrite} \\ 2s>110 \\ \text{Divide both sides by 2} \\ (2s)/(2)>(110)/(2) \\ \\ s>55 \end{gathered}`

The final answer is

Option B