A car rental company charges $36 per day, and $0.50 per mile over 100 miles
You rent the car for 5 days and drive 180 miles
Expression: x = amount of miles,
IF x < 100, then "0.50x + 36" is your expression
Multiply 36 with 5
36 x 5 = 180
Subtract 100 from 180, and then multiply by 0.50
180 - 100 = 80 x 0.50 = 40
Add the two numbers gotten together.
180 + 40 = 220
$220 is your total
hope this helps