Answer:
Define your variables: c = Cookie: $1 b = Pumkin Bread: $2
Equation:
Lady Gaga: 12c + 4b = 20
Katy Perry: 6c + 3b = 12
Step-by-step explanation:
Lady Gaga: 12c + 4b = 20
Katy Perry: 6c + 3b = 12
Solve using elimination
12c(-3) + 4b(-3) = 20(-3)
6c(4) + 3b(4) = 12(4)
-36c -12b = -60
24c + 12b = 48
-12c = -12
c = 1 (1 cookie is $1)
if we plug in 1 for c in Lady Gaga’s equation:
12(1) + 4b = 20
12 + 4b = 20
4b = 8
b = 2 (1 pumpkin bread is $2)
Define your variables: c = Cookie: $1 b = Pumkin Bread: $2
Equation:
Lady Gaga: 12c + 4b = 20
Katy Perry: 6c + 3b = 12
