Answer:
rate of change = 1.5 dollars per mile
Step-by-step explanation:
cost for travelling 1 mile = 3.75
cost 2 miles = 5.25
cost 3 miles = 6.75
cost 4 miles = 8.25
1.5 dollars per mile
the bottom equation should be 18+30=3(6+10)
6(3+10) = 18+60 which equals 78
78 does not equal 18
14 would be your answer :)
Answer: 1,3,60°