Function Notation Interpreting

Where is the ⭑?

• f(5) = 4

• f(0) = 7

• f(0) = 0

• f(7) = 0

Where is the ⭑?

• f(5) = 4

• f(2) = 6

• f(6) = 2

• f(7) = 0

Is f(3) = f(5) ?

• yes

  f(3) = f(5)

• no

  f(3) ≠ f(5)

Answer explanation

yes!

f(3) = 4

and

f(5) = 4

What is f(7)?

• 0

• 1

• 2

• 3

Answer explanation

f(7) = 0

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

• A cost is $7 to ride the taxi

• The cost to ride 7 miles

• The minimum distance to ride a taxi

• The minimum cost of a taxi

Is this mapping a function or not a function? 

• Function

• Not a Function

$f\left(x\right)=5x-12$ What is $f\left(-4\right)$

• -32

• -3

• -12

• 3

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write a function for the total cost of x pounds of fruit from the orchard.

• f(x) = 3x + 2.5

• f(x) = 2.50x + 3

• f(x) = 2.50x 

• f(x) = 3x + 2.50

Function w gives the weight of a cat, in kilograms, when it is m months old. Which statement represents the meaning of the equation w(10) = 8 in this situation?

• The cat weighs 10 kilograms when it is 8 months old.

• The cat weighs 8 kilograms when it is 10 months old.

• The weight of the cat has been 10 kilograms for 8 months.

Evaluate f(-2) if f(x) = x+3

• -1

• 1

• 5

• -5