Question

Which of the following is equivalent to the expression to: 9x + 6?

a. 3 (3n - 2)
b. 3 (3n) + 2n
c. 3 (3n + 2)
d. 3 (3n +2n)

Answer 1

C because 3 times 3n is 9n and 3 times 2 is 6 so it’s 9n+6 but in this case 9x+6(same thing)

Answer 2

C.
`3(3n + 2)`

Explanation:

A.
`3(3n - 2)\\9n -6`

B.
`3(3n) +2n\\9n + 2n\\11n`

C.
`3(3n + 2)\\9n + 6`

D.
`3(3n + 2n)\\9n +6n\\15n`