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Expression for 73•7-5?
Answer is 506
First do 104/4 which equals which equals 26
so you can drive 26miles on one gallon
then do 78/26 which equals 3
so you used 3 gallons of gas on trip 2
For this case we have the following functions:
We must find 
. By definition we have to:
So:
Finally, the composite function is:
Answer:
