66x is the correct answer
The answer (I believe) Is 6.
bc you do this...
x+(5x-6)+(5x-6)=54
then solve
Answer:

Graph in the image attached.
Step-by-step explanation:
Using the model of a linear equation, we have:

'b' is the y-intercept of the equation, that is, the inicial value of G, when D = 0.
So if David starts the trip with 14 gallons of gas, we have b = 14.
'a' is the slope of the line, that is, an increase of 1 in the value of D causes an increase of 'a' in the value of G.
So if the car uses one gallon every 20 miles, the value of a is -1/20 (an increase of 20 in D causes a decrease of 1 in G).]
So our equation is:

The graph of this equation is in the image attached.
Answer:
the answers are b and e
Step-by-step explanation:
F(x)=[(1/x)-5]+8 °°°°°°°°°°°°