Complete each statement to describe a diagram that represents each situation. Then complete the addition expression to represent the final temperature. a. The temperature was 80° F and then fell 20° F.

A number line diagram with an arrow that starts at
, is
units long, and points to the left.
addition sentence:
+ (
)

b. The temperature was -13° F and then rose 9° F.

A number line diagram with an arrow that starts at
, is
units long, and points to the right.
addition sentence:
+

c. The temperature was -5° F and then fell 8° F.

A number line diagram with an arrow that starts at
, is
units long, and points to the left.
addition sentence:
+ (
)

Hye ryung is the president of the local chapter of the american medical students association (amsa). she is organizing local outreach and informational meetings. at her first meeting there are five people present (including herself). every month after that her group grows by 5 people. a. how many members are in the group after 6 months? b. the logistics of hosting and feeding her group at meetings was more complicated than expected. the cost of feeding 5 people at her first meeting was $30, for 10 people it was $35, for 15 it was $45, and after 6 months all of the costs had added up to $100. write a function to model the cost with the number of people attending meetings. c. what connections can you make between the linear growth of the group’s membership and the increasing costs of running meetings?

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.