Answer:
a. Equation: 0.8x+30 = 1.2x+14
b. Solution: 40 Stickers
Explanation:
"per sticker" means there will be a variable which will be how many stickers he buys next to the price and the fee is the amount of money that will be added onto the fee price.
Company A equation: 0.8x+30
Company B equation: 1.2x+14
You will set these equal to each other to find the number of stickers which cost the same for both companies, then solve for x by doing inverse operations.
0.8x+30 = 1.2x+14 [subtract 14 from both sides]
0.8x+16 = 1.2x [subtract 0.8x from both sides]
16 = 0.4x [divide 0.4 from both sides]
x = 40 [The solution is 40 stickers]