5. Elena bought 8 tokens for $4.40.
b. How much does 19 tokens cost?

8 = 4.40

9 = x

9(4.40)=39.6

39.6/8=4.95

So 19 tokens cost $4.95.

Step-by-step explanation:

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers

this is answer of 144 cubic meters