Answer:
84.95 with 15% : 102.87
84.95 with 20% tip: 107.34
125 with 15% tip: 143.75
125 with 20% tip: 150
12.45 with 15% tip: 14.38
12.45 with 20% tip: 14.94
Step-by-step explanation:
Take value on the vertical column and multiply it by either 1.15 or 1.2
In standard form its written
3x-12=-9
if you need help solving then here you go as well
3x-12=-9
add 12 to both sides
3x=3
divide both sides by 3
x=1