C=.35x + 9.50
.35 is the amount per check so you put the x next to it because that represents how may check you use plus 9.50 per month
hope this helps
Let us say that:
a = black kittens
b = white kittens
We know that:
a = 5 b
a + b = 25
Therefore:
5 b + b = 25
6 b = 25
b = 4.17
But we cannot have a fraction value for the number of
kittens, so round off:
b = 4
So a is:
a = 25 – 4 = 21
<span>Hence Zoe counts additional 1 black kitten.</span>
That would be 16 because all the others are multiples of 3.
