Question

Which expression is equivalent to 2(a+3) when a= 3?

A 2(3)
B 5(3)
C 2(3)+3
D 2(3)+6​

Answer 1

I believe it'll be D.

Explanation:

2(a+3) would be 2(3+3). Following PEMDAS, it'll be 2(6), or in other words 12.

In the answer D, 2(3) would equal 6. And 6 + 6 equals 12.

Sorry if this explanation isn't proper enough.

Answer 2

D

Explanation:

2(a+3), a=3

2(3+3)

2(6)

12

A) 2(3)=5 (not equivalent)

B) 5(3)=15 (not equivalent)

C) 2(3)+3=9 (not equivalent)

D) 2(3)+6=12 (equivalent)