91Ó°ÊÓ

Evaluate the expression when x = – 9.

– 6 + x

Evaluate the experssion when $m=5\text{and}n=6$

localid="1647947857253" $mn$

Evaluate the expression k⁵ whenk = 6.

k⁵ whenk = 6

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

10. $p  +  q$

Find the product or quotient.

$11.9÷1.7$

Evaluate the expression when $m=-6$.

$-7-m$

Evaluate the expression.

$18−3â‹\dots 2$

Evaluate the expression.

$\frac{75−39}{4â‹\dots 3}$

Evaluate the expression$11â‹\dots 7−9â‹\dots 5$

Astronauts In 2002, astronauts Carl Walz and Dan Bursch spent 196 days in orbit. How many sunrises did they see?

1. An astronaut in orbit circles Earth every 90 minutes and sees 16 sunrises each day. Let d be the number of days an astronaut is in orbit. Write a variable expression for the number of sunrises seen in d days.
2. Identify the value of d for Walz’s and Bursch’s 2002 space flight.
3. Find the number of sunrises Walz and Bursch saw