Expand and simplify a) (x+8) (x+2) + (x+3) (x+9) b) (3y-2) (y+4)+ (5y-1)(y-3)

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points