Kevin is buying confetti and party string for his big sister's birthday party. The party store charges $1.25 for each bag of confetti
and $3.50 for each package of string. Which of the following
equations could be used to determine different combinations
of c bags of confetti and s packages of party string that he could buy
for a total of $28?
rive
a) c + s = 28
b) 1.250 + 3.50s = 28
c) (1.25 +3.5)(c+s) = 28

d) 5c + 1.25s = 28