91Ó°ÊÓ

Evaluate the expression when x = – 9.

x + ( – 3)

Evaluate the expression.

$27÷3+6$

Evaluate the expression.

$90÷5+4$

Find the product or quotient.

12(5)

Evaluate the expression when$x=4\text{and}y=2$

localid="1648625501579" $2{(x−y)}^2$

Evaluate the expression when $p=12  \text{and}  q=15$.

12. $p q$

The integers $-6,12,-2,\text{and}-16$represent yards gained or lost by a football team on 4 plays. Describe the steps you would use to find the mean of the integers. Then find the mean.

Evaluate the expression

$14÷7+36÷4$

Find the difference.

$8-9$

Error Analysis: Describe and correct the error in writing 2³ as a repeated multiplication.