A unit rate is a ratio that has a denominator of 1. A unit rate is also called a unit ratio. (They mean the same thing.)
Hope this helps :)
The interquartile range of the data set is 30.
45 minutes i m sure all you do is count up or subtract 60 from 15
Since you are not distributing at all, you can ignore the parenthesis :)
When ignoring the parenthesis your equation is
18x + 11 - 4x
Then just combine like terms :)
14x + 11
Your answer is C.
Hope this helped!