Ashley is keeping track of the growth of a bamboo plant. when she purchased the plant last month its height was 8.75 inches. its height today is 9.5 inches. assuming that the growth rate remains unchanged, which equation models the height of the bamboo plant after x months of growth? using the graph, estimate the height of the plant in 6 months. a) y = .75x; about 11 inches b) y = x + 9.5; about 15 inches c) y = 8.75x; about 52.5 inches d) y = .75x + 8.75; about 13.25 inches