17%
1.

Which expression is equivalent to the following?

$4f + 9f$
2.

Which expression is equivalent to the following?

$7(4b)$
3.

Which expression is equivalent to the following?

$4(5g + 6) + 6(2g + 2)$
4.

Which expression is equivalent to the following?

$3(4r + 5) - 2r$
5.

Which expression is equivalent to the following?

$5(6k + 2) - 8k$
6.

Which expression is equivalent to the following?

$9(3d + 4) - 6d$