$3.54 per gallon there ya go
Answer: 
==================================================
Explanation:
Point-slope form is

where m is the slope and
is the point the line goes through.
We're given the slope of m = 5/6, and we want the line going through (-8,0) which is the x-intercept -8. The x-intercept always occurs when y = 0.
So,

We can replace the y-0 with y; however, I'm going to keep that 0 so that the equation better matches the point-slope form.
Correct answer is C.
Both models have equal volume.
Model B has a larger surface area.
The number sentence 9+8=18.