Answer:
Step-by-step explanation:
let f(x)=ab^x
when x=1,f(x)=6
6=ab
when x=2,f(x)=18
18=ab^2
divide

9x(6+x)
54x+9x
43x
So in the end the answer after doing the work it will be 43x
You just study alot and do questions on fractions
-3 (5 - x) = 4x
-15 + x = 4x
-15 = 3x
X = 5
18x^2+45x+27 is the answer