Answer
$30.48
Step-by-step explanation:
Find out how to get fro, -10.48 to 20. When you add .48 it makes it just $10. Add 30 more and get $20.
Ik the first equation you just distribute three to north numbers and it’ll give you 9x+15 and in the second one you can distribute a negative 1 and it’ll give you 9x+15
The answer would be r= 9/2