we just did this in math-
I believe its $6.95 but i did that in my head so i might be wrong
He can make 18 and then he wouldn't have enough to make that 19th. You just take 28 and multiply it by 2, then divide it by 3. Or just multiply 28 by 2/3
Answer:

Step-by-step explanation:
We are given the following expression in the question:

a)

which is not equivalent to the given expression.
b)

which is equivalent to the given expression
c)

which is equivalent to the given expression.
d)

which is not equivalent to the given expression.
e)

which is equivalent to the given expression.
A + B + C = 180
x + 2x + 2 + 3x + 4 = 180
6x + 6 = 180
6x = 174
x = 29