Question

Beth has $900 in the bank. Every time she rides the bus she spends $2. How do you write an inequality that Beth can use to see how many times she can ride the bus and still have more than $500 in the bank?

Answer 1

This is the answer for (b) bus rides she takes.
`500<900-2b`

Explanation:

`500<900-2b`

`500-900< -2b`

`-400< -2b`

`(-400)/(-2)> b`

We reverse the signs above because we are dividing by a negative number.

`200> b`

She can take less than 200(a lot of) bus rides.