Georgia needs to buy some cheese. An 8-ounce package of cheddar cheese costs $3.50. A 12-ounce package of cheddar
cheese costs $5.25. Which is the better buy? How many cents
per ounce cheaper is the better buy?

neither buy is better, both buys are $2.28571428/ounce

0.6

39mph

step-by-step explanation:

a and c

for infinitely many solutions we require both left and right sides to be equal

distribute and simplify

a

14 - 8x = 20 - 8x - 6 = 14 - 8x ← both sides equal so infinite solutions

b

6x - 54 = 6x - 54 + x = 7x - 54 ← not equal

c

4x + 16 = 4x + 10 + 6 = 4x + 16 ← both sides equal so infinite solutions

d

5x - 40 + 10 = 5x + 10

5x - 30 = 5x + 10 ← not equal