Question

Which expression is equivalent to 7 (a + 2) when a = 6?
7 (6)
9 (6)
7 (6) + 2
7 (6) + 14

Answer 1

To find the expression equivalent to \( 7(a + 2) \) when \( a = 6 \), we first substitute \( a \) with \( 6 \):

\[
7(a + 2) = 7(6 + 2) = 7(8).
\]

Now, we can simplify \( 7(8) \):

\[
7(8) = 56.
\]

Now, let's evaluate each option to see if it equals 56:

1. \( 7(6) = 42 \)
2. \( 9(6) = 54 \)
3. \( 7(6) + 2 = 42 + 2 = 44 \)
4. \( 7(6) + 14 = 42 + 14 = 56 \)

The only expression that equals 56 is:

**\( 7(6) + 14 \)**.