Hey there!!
Let's take 'h' as the number of hours.
The volume already present is "22" gallons.
Hence, this would become the y-intercept.
... ( 0 , 22 )
... The slope would be 26
Hence, y would be 516 and m would be 26 and x would be h.
Slope-intercept form :-
y = mx + b
( m is the slope and b is the y-intercept )
... 516 = 26h + 22
... 516 - 22 = 26h
... 494 = 26h
... h = 494 / 26
... h = 19
<em>Hence, the number of hours would be 19. </em>
Hope my answer helps!
