1. 20% tip on a 30$ haircut 2. $80 gift marked up 60%
3. 7% tax on a $3 soda with an $8 burger

please help me :/

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Martha needs 22.25 strawberries for every 5 smoothies she makes. complete the table to see how many strawberries she would need to make 10 smoothies and 20 smoothies.

What is the volume of a rectangular prism that is 120 centimeters by 2 meters by 1.5 meters in cubic meters?