Sandra enters a pumpkin growing contest each year. currently, her pumpkin measures 36 inches in circumference. using data from previous years she models the weekly growth for her pumpkin with the equation y = 2x + 36. what is the meaning of the y-intercept in the equation? a) end date of the contest b) starting date of the contest c) starting size of the pumpkin d) largest size the pumpkin can grow