Expression, Equations, and Inequalities

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage.  If Juanita's monthly bill was $56.20, what is an equation that can be used to determine her total minutes (x)?

• 56.20 = 15 + 0.20x

• 56.20 =15 (0.20x)

• 56.20 = 15 + x + 0.20

• 56.20 = 0.20 + 15x

Tags

CCSS.7.EE.B.4A

A cookie jar starts off with 32 cookies in it, and each day 2 cookies are eaten. After a certain number of days, there are 14 cookies left in the jar. Which of the following equations represents the day, d, when there are 14 cookies in the jar?

• 32 - 2d = 14

• 32 + 2d = 14

• (32/2)d = 14

• (2/32)d = 14

Tags

CCSS.HSA.CED.A.3

Which inequality represents the situation six more than twice a number is greater than 50?

• 6 + x > 50

• 6 + 2x < 50

• 2x + 6 > 50

• 6x + 2 > 50

Tags

CCSS.7.EE.B.4B

the difference if 3 times a number and 7

• 3 - 7n

• 3n - 7

• 3n + 7 

• 3 / 7n

Tags

CCSS.6.EE.A.2A

Mathematical Equivalence

ON

• -11

• -13

• -10

• -9

• -8

Answer explanation

All numbers less than -10. So to the left on the number line

"Twenty-four minus three times an integer, x, is less than x minus four."

Write an inequality, in terms of x, to represent this information.

Mathematical Equivalence

OFF

Tags

CCSS.7.EE.B.4B

Match the following

• inequality

• equation

• expression

Five times Mike's age, increased by nine

• 5(x+9)

• 9(5+x)

• 9x+5

• 5x+9

Tags

CCSS.6.EE.A.2A

m - 5 > 10

• m is less than 15

• m is greater than 5

• m is greater than 15

• m is less than 5 

Tags

CCSS.7.EE.B.4B