Find MA:
MA = 67.2-32 = 35.2
Now set up a ratio:
35.2/67.2 = x/81.9
Cross multiply:
67.2x = 2882.88
Divide both sides by 67.2:
X = 42.9
First car: $10 + 3 every mile
Second car: $20 + 2 per every mile
For the part that says "Write an equation that represents the cost of
each car service and determine when they cost the same.", find the LCM of 13 and 22.
Set up a proportion:
5/200 = 7/x
Cross multiply:
200 * 7 = 5 * x
1400 = 5x
Divide 5 to both sides:
x = 280
Well, you would need to multiply 6.75 and 21, since there are 21 spools, you then simply subtract the spool used for the project and the is your answer, and don't forget to label
