Answer:
42 cakes
Step-by-step explanation:
123 - 81 = 42
.....
n(R)=9
n(Y)=4
n(B)=5
n(G)=7
n(s)25
probability of getting red =n(R)/n(S)=9/25
y=-15x+b
Just move it around and use a calucator
13
