15. a) Target sells cases of Mountain Dew for $3 if you buy a Target Red
Card for $20. Walmart sells cases of Mountain Dew for $5. Choose the
equation that can be used to determine how many cases will it take for the
cost to be the same?
3x + 20 = 5x
8x = 20
ОА
OB
8x + 20 = 0
3x - 20 = 5
D

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.