Writing a Function Rule

The price (p) of an ice cream is $3.95 plus $0.85 for each topping (t) on the ice cream

• y = 0.85x + 3.95

• p = 3.95t + 0.85

• p = 0.85t + 3.95

Tags

CCSS.6.EE.C.9

The price (p) of an ice cream is $3.95 plus $0.85 for each topping (t) on the ice cream

Is this situation discrete or continuous?

• discrete

• continuous

Tags

CCSS.HSF-LE.A.1B

A babysitter’s earnings e are a function of the number of hours n worked at a rate of $7.25 per hour

• y = 7.25x

• e = 7.25 + n

• e = 7.25n

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A plumber’s fees f are $75 for a house call and $60 per hour h for each hour worked

• h = 60f + 75

• f = 75h + 60

• f = 75c + 60h

• f = 60h + 75

Tags

CCSS.6.EE.C.9

A plumber’s fees f are $75 for a house call and $60 per hour h for each hour worked

Is this situation discrete or continuous?

• discrete

• continuous

Tags

CCSS.HSF-LE.A.1B

A hot dog d costs $1 more than one-half the cost of a hamburger h

• d = 1.5h

• d = 0.5h + 1

• d = h/(1/2) + 1

• d = 1h + 1/2

Tags

CCSS.6.EE.C.9

Eric is 2 years younger than 2 times his sister’s age. Write a rule that represents Eric’s age a as a function of his sister’s age s.

• a = 2 - 2s

• s = 2a + 2

• a = 2s - 2

• a = 2(s - 2)

Tags

CCSS.HSF-BF.A.1A

A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost of having any number of pizzas delivered?

• c = 12p + 3
• c = 12p
• c = 3p
• c = 12 + 3p

Tags

CCSS.HSF-BF.A.1A

A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost of having any number of pizzas delivered?

Is this situation discrete or continuous?

• discrete

• continuous

Tags

CCSS.8.EE.B.5

A plumber charges a service fee of $40 plus $25 per hour for labor.
(A) Write a function rule for the total cost of hiring the plumber for a job that takes x hours.
(B) How much would it cost to hire the plumber for a job that takes 4 hours?

• (A) y = 40 + 25x
  (B) $140
• (A) y = 40x + 25
  (B) $185
• (A) y = 40 + 25x 
  (B) $185
• (A) y = 40x + 25 
  (B) $140

Tags

CCSS.HSF-BF.A.1A