The prime factorisation of 81 is 3^4(because 3*3*3*3 four times =81)
do not change the rest 3^4 m^2 x^3
B is true; pi= ~3.14. 3+4 is equal to 7, so because pi is greater than 3, pi+4>7
F(x) = ㏑(x² - 4)
Domain: {-2 ≤ x ≤ 2}, or [-2, 2]
Answer: 6 cannot go into 3 because it is a larger number but 3 can go into 6 twice because 3x2=6