Sandi's meal cost $18.86. including a 15% tip. What was the cost of the meal before the tip was added. Set up your equation as you did for $64.2.

16.031

Step-by-step explanation:

The cost of the meal before tip was added..

$2.82

Step-by-step explanation:

15% of $18.86

= 0.15 · 18.86

= 2.829

The cost of the meal prior to the tip is $2.82

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80