Exit Ticket Algebra Functions

g(x) = 3x + 1
g(2) = _______

• 6
• 7
• 8
• 9

g(x) = 3x + 1
g(10) = ______

• 14
• 31
• 15
• -31

How do you say f(x)?

• "f x"

• "f of x"

• "f times x"

• "f with an x inside parenthesis"

The function c(m) = 1.45m + 3.50 represents the cost of a taxi for m miles.
What does c(7) represent?

• It costs $7 to ride the taxi

• The cost to ride 7 miles
• The minimum distance to ride a taxi
• The minimum cost of a taxi

The function h(t) represents the height in inches of a plant after t weeks. What does the notation h(4) = 5 mean?

• After 5 week the plant is 4 inches tall
• The plant grows at a rate of 5/4 inch per week
• After 4 weeks the plant is 5 inches tall
• The plant grows at a rate of 1 inch per week

A company is selling bubble gum.  The function g(x)=3x+4 tells the company how much to charge if someone buys x packages of bubble gum.  Find g(8) and tell what it means within the context of the problem.

• g(8)=8.  This means that after 8 packages of gum, the company makes $8.
• g(8)=42.  This means that 8 packages of gum costs $42.
• g(8)=28.  This means that 8 packages of gum costs $28.
• g(8)=24.  This means that 8 packages of gum costs $24.

Ms. Brackemyer is collecting pencils.  The function p(x)=5x+12 tells us the total amount of pencils Ms. Brackemyer has after collecting for x number of days.  What is the meaning of p(8)=52?

• Ms. Brackemyer starts with 8 pencils and ends with 52.
• After 8 days, Ms. Brackemyer has 52 pencils.
• Ms. Brackemyer starts with 52 pencils and gets 4 more every day.
• Every day, Ms. Brackemyer gets 4 new pencils until she has 52.

A veterinarian uses the function p(x) to predict the weight, in pounds, of a poodle that is x months old.

What does p(8) =40 mean in this situation?

• The veterinarian predicts that a poodle that is 8 months old will weigh 20 pounds.
• The veterinarian predicts that a poodle that is 8 months old will weigh 40 pounds.
• The veterinarian predicts that a poodle that is 40 months old will weigh 8 pounds.

• The veterinarian predicts that a poodle that is 8 months old will weigh 80 pounds.