I'm trying to find the answer for number 4 anyone have answers ?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)