Answer:
6x-15
Step-by-step explanation:
First plug in 3x-9 for x
2(3x-9) +3
Multiply 2 by (3x-9)
2(3x-9)=6x-18
add 3
6x-18+3=6x-15
hope this helps :)
Answer:
Part A is 2/9 of the whole
Part B is 7/9 of the whole
I would say direct because the more gallons of gasoline used, the bigger the cost.