Answer:
9
Step-by-step explanation:
Make sure to use PEMDAS.

The range is the largest number subtracted by the smallest number.
28-4=24 is the range.
Answer:
32 minutes or .5333 of an hour
Step-by-step explanation:
Answer:
$54.00
Step-by-step explanation:
The original price with a sale of 1/4 off:
80(0.75)= 60
Has a coupon for additional 10% off:
60(0.9)=54
So, $54