Answer:
9x^4 + 6x^3 + 3x^2
Step-by-step explanation:
3x^2 (2x^2 + 2x + 1)
= (2x^2(3x^2) + 2x(3x^2) + 1(3x^2) )
= 9x^4 + 6x^3 + 3x^2
the answer is letter d
24 students / 3 groups = 8
8 parents will be needed to put the students into groups of 3.
A=1/4πd2
A = 1/4(22/7)(18)^2
= 254.47