### Home > MC2 > Chapter 6 > Lesson 6.1.3 > Problem6-29

6-29.

Evaluate the following expressions.

1. $7x + 8$ when $x = 9$

When you replace $x$ with $9$ your equation is:
$7(9) + 8$

Use the order of operations to simplify.

$71$

1. $6(y-11)$ when $y =-6$

Replace $y$ with $−6$ and then use the order of operations to simplify the expression.

1. $45-5m + 7$ when $m = –4$

Use the method presented in part (a).

$72$

1. $–2t + 9$ when $t =-20$

See part (a).