cheese cake = c
chocalate marble = m
Shayna
c + 4m = 81
Jacob
4c + 2m = 58
Solving by Elimination
c + 4m = 81
-8c - 4m = -116
-7c = -35
c = -35/-7
c = 5
Find m
5 + 4m = 81
4m = 81 - 5
4m = 76
m = 76/4
m = 19
The cost of a cheesecake = $5
The cost of a marble cheesecake = $19