Answer:
The answer is A
Step-by-step explanation:
you have to use intercept theorem, also known as Thales's theorem to slove this problem
we know that
the car gets 18 miles per -----------> 1 gallon of gasoline
so
for 543 miles ---------------------> x gallons of gasoline
by proportion
543/18=x/1---------->x=543/18------->x=30.17 gallons
therefore
the answer is
30.17 gallons
Answer:
under the condition of f(x)=x composite function is an identity one