Answer:
D = 9x + 18
Explanation:
Distributive Property: allows us to multiply the number by a group of numbers, which are added together. The distributive property is given by: a(b+c) = ab + ac
In 3(3x + 6), 3 is distributed:
(3)(3x)+(3)(6) = 3 being distributed to both terms: 3x and 6
=9x+18 = after being multiplied
D should be the answer so I hope this helps!