2.75 is 110%
2.75/1.1=2.50
Therefore, the main bill was two and a half dollars
We know that the angles of a straight line equal 180 degrees and also the sum of all angles in a triangle equals 180 degrees, therefore you can determine x = 38
Answer:
Option A 
Step-by-step explanation:
4 infants + 11 toddlers = 15 children
4 infants / 15 children = 
Answer: 10.75
Steps:
After 110miles, it used 2.75gallons
Therefore, the amount of gas used per mile is: 100/2.75= 40 gallon per mile
So after 430miles, the number of gallons used: 430/40 = 10.75 gallons
Hope this helps ʕ•ᴥ•ʔ