Functions & proportionality review

At a lemonade stand, the total money 𝑀 depends on cups sold 𝑐 at $2 per cup. Which rule fits?

• M=c+2

• M=2+c

• M=2c

• M=2c

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Mia earns $5 for each car she washes. What is the independent variable?

• Money earned

• Number of cars washed

• Day of the week

• Weather

Tags

CCSS.6.EE.C.9

A ride share charges $3 per mile (no fee). What is the cost for 18 miles?

• $48

• $54

• $56

• $60

Tags

CCSS.6.RP.A.3B

Sam made $96 at a rate of $12 per hour. How many hours did he work?

• 6

• 7

• 8

• 12

Tags

CCSS.3.OA.A.3

Plan A pays $2 per item; Plan B pays $2.50 per item. After 40 items, how much more does Plan B pay?

• $18

• $20

• $22

• $25

Tags

CCSS.7.EE.B.3

Kara earns $4 per chore. Which shows the correct process → dollars for 27 chores?

• 4+27→$31

• 27−4→$23

• 27÷4→$6.75

• 4×27→$108

Tags

CCSS.7.EE.B.3

Which ordered pair lies on the line y = 5x?

• (6, 25)

• (7, 35)

• (8, 45)

• (10, 40)

A table has points (3,12),(5,20),(9,36). What is the constant of proportionality k in y=kx?

• 3

• 4

• 5

• 12

Tags

CCSS.7.RP.A.2B

Which sentence correctly uses “is a function of”?

• The number of posters is a function of money earned.

• Money earned is a function of the number of posters made.

• Posters and money are unrelated.

• Posters are a function of art class time.

Tags

CCSS.HSF.IF.A.2

Tickets cost $7 each: m = 7t. Which domain–range description fits best?

• Domain: all real numbers; Range: all real numbers

• Domain: positive reals; Range: positive reals

• Domain: nonnegative integers; Range: nonnegative multiples of 7

• Domain: negative integers; Range: negative multiples of 7