X2 + 9x + 27 = 9
= x
or x =

2x+9x+27=x

11x+27=x

27=x-11x

27= - 10x

10x= -27

x= -27÷10

x= -2.7

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.