Suppose you drive an average of 15,000 miles per year, and your car gets 24 miles per gallon. Suppose gasoline costs $1.60 a gallon.
A) How much do you spend each year on gasoline? MY ANSWER: $1,000
B) You plan to trade in your car for one that gets x more miles per gallon. Write an expression to represent the new yearly cost of gasoline. MY ANSWER: 1500/24+x(1.60)
C) Write an expression to represent the new yearly cost of gasoline. MY ANSWER: 1000-1500/24+x(1.60)
D) Suppose you save $200 a year with the new car. How many miles per gallon does the new car get?
need help answering part D

Question

Suppose you drive an average of 15,000 miles per year, and your car gets 24 miles per gallon. Suppose gasoline costs $1.60 a gallon.
A) How much do you spend each year on gasoline? MY ANSWER: $1,000
B) You plan to trade in your car for one that gets x more miles per gallon. Write an expression to represent the new yearly cost of gasoline. MY ANSWER: 1500/24+x(1.60)
C) Write an expression to represent the new yearly cost of gasoline. MY ANSWER: 1000-1500/24+x(1.60)
D) Suppose you save $200 a year with the new car. How many miles per gallon does the new car get? 
need help answering part D

mertsj · Answer

Your idea for B is right but you didn't express it correctly:
[1500/(24+x)](1.60)

mertsj · Answer

You must have a mistake in your post because the questions for B and C are the same.

mertsj · Answer

D.  If you save $200 that means the cost is now $800 per year.
$$1.60(\frac{15000}{x})=800$$

anonymous · Answer

thank you and yes I did post part c wrong

mertsj · Answer

yw