8th review

Miley runs a "warm-up" lap for 10 minutes and then takes nine minutes to run each mile. The total time after running m miles is 55 minutes. Which equation models this scenario?

• 55 = 10m + 9

• 55 = 9m - 10

• 55 = 10m - 9

• 55 = 9m + 10

Tags

CCSS.HSA.CED.A.3

Ace Communications charges $15.00 per month plus $0.20 per minute of airtime usage. If Juanita uses m minutes of airtime, which equation can be used to determine her monthly cell phone bill(c)?

• c = 15 + m + 0.20

• c = 15 + 0.20m

• c = 15(0.20m)

• c = 0.20 + 15m

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

 $4-2x=2x-4$  

• one solution

• no solution

• infinite solutions

Tags

CCSS.8.EE.C.7A

 $3\left(x+4\right)=3\left(x-8\right)$  

• one solution

• no solution

• infinite solutions

Tags

CCSS.8.EE.C.7A