Real-World Situations with Expressions

Bonnie pays a monthly fee of $80 at the health club and an additional $9 every time she attends a yoga class. Which expression below shows her total cost T if she attends y yoga classes this month?

• T = 80 + 9y

• T = 80y + 9

• T = 80 + 9 + y

• T = (80+9)y

Tags

CCSS.6.EE.B.6

Yvette has a home-based business putting on children's parties. She charges $55 to design the party and then $4 per child. Write a function rule that relates the total cost of the party to the number of children n.

• f(n) = 4 + 55n

• f(n) = 4 - 55n

• f(n) = 4n - 55

• f(n) = 55 + 4n

Tags

CCSS.HSF-BF.A.1A

A flower deliveryman receives $40 a day for transportation costs plus $10 for each flower delivery he makes. How many dollars (d) will he have after making x flower deliveries

• d = 10x + 40

• d = x + 10 + 40

• d = 40x + 10

• d = 10x - 40

Tags

CCSS.6.EE.C.9

The height, h, of an object decreases by 7 feet every second. If the object is initially set at 100 feet, which equation represents its height after s seconds?

• h = 7 - 100s

• h = 100s - 7

• h = 100 - 7s

• h = 100 + 7s

Tags

CCSS.HSF-BF.A.1A

Mrs. Guang purchased four airline tickets to Florida. She will also pay a fee of $55 for an extra piece of luggage. Define a variable and write an expression to represent her total cost of flying to Florida.

• l = (pieces of) luggage

• 4l + 55

• 55t + 4

• t = (number of) tickets

• 4t + 55

• 55l + 4

Tags

CCSS.HSA-SSE.A.1A

I open a saving account with $200 and plan to put $50 per month in the account.
Which expression represents this situation after x number of months?

• 200 + 50x

• 200x + 50

• 200 + x + 50

• 12x(50 + 200)

Tags

CCSS.6.EE.B.6

A camp leader figures that she needs one tent for every three campers, plus a tent for herself. Define a variable and write an expression to represent the number of tents needed.

​ ​ (a)   ​ ​ ​ ​ (b)  

• 1c + 3

• 3c + 1

• t = tents

• 1t + 3

• 3t + 1

• c = (number of) campers

Tags

CCSS.HSA-SSE.A.1A

Mrs. Guang purchased four airline tickets to Florida. She will also pay a fee of $55 for an extra piece of luggage. Define a variable and write an expression to represent her total cost of flying to Florida.

• l = (pieces of) luggage

• 4l + 55

• 55t + 4

• t = (number of) tickets

• 4t + 55

• 55l + 4

Tags

CCSS.HSA-SSE.A.1A

Write an expression to represent the following situation.

Susan's age in three years, when a represents her present age.

Mathematical Equivalence

ON

Tags

CCSS.6.EE.B.6

A plumber charges $50 to visit a house plus $40 for every hour of work. Define a variable and write an expression to represent the total cost of hiring a plumber.

​ (a)   ​ (b)  

• h = hours (of work)

• 40h + 50

• 50v + 40

• 50h + 40

• 40v + 50

• v = visits

Tags

CCSS.HSA-SSE.A.1A