Question

Question 9.








Which of the following situations can be solved by using the equation
? Select two that apply.

An elephant eats 5 tons of food every day. After t number of days, the elephant will have eaten 175 tons of food.


Thomas won $175 in a contest. He decided to give his sister $5, and now Thomas has t dollars left from his winnings.


It takes Mr. Martinez t number of minutes to grade one math test. If Mr. Martinez has 5 tests to grade, he will work for a total of 175 minutes.


Mary's bookshelf can hold a total of 175 books. Mary has 5 books on the top shelf, so she will be able to fit t number of books on the bottom shelf.


A painter is calculating the amount of paint he used on a project. He knows that he used 5 gallons of paint every day for 175 days, so he used a total of t gallons of paint.

Answer 1

Answers: 1 and 3.

- Elephant: 5 tons/day × t days = 175 tons → 5t = 175.
- Mr. Martinez: t minutes/test × 5 tests = 175 minutes → 5t = 175.

The others give different equations:
- Thomas: t = 175 − 5.
- Mary: t = 175 − 5.
- Painter: t = 5 × 175 (not 5t = 175).