(look at picture) pleeeease help me do this ); i need to turn it in asap! thank yoouuu so much :)

Answer:
a) 60 miles b) 2 hours c) f(3)=30 this means it took the person 3 hours to travel 30 miles d) That is 5 and this means it took the person 5 hours to travel 40 miles e) f(6)=50