Use your knowledge about parentheses and substitution to solve the following: 1. r(s)(t) =

2. (r)(s)(t)(x)(y) =

3. (7x + 2Y) =

Brent works part-time at a clothing store. he earns an hourly wage of $15. if he needs to earn more than $45 in a day and works for x hours a day, which inequality represents this situation? a. 15x > 45 b. 15x < 60 c. x > 60 d. 15x < 45 e. x < 60

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

Select all of the following expressions that are equal to 2.5.