Answer:
147 gallons
Step-by-step explanation:
21 miles x 7 gallons
Simple she gets either 2 lollipops and 2 candy bars or get 4 lollipops and 1 candy bar.
If q is the independent variable we need to solve for s.
3s-9=6q add 9 to both sides
3s=6q+9 divide both sides by 3
s=2q+3
