Evaluate Functions With Variables

What is the value of x in:
f(4) = 3x - 1

• 11

• 4

• -1

• 0

Derek works at Subway making $9.25 an hour.  The function d(x)=9.25x tells us how much money Derek makes after x hours of working.  What is the meaning of d(4)=37?

• After 4 hours of work, Derek makes $37.

• Derek needs $4 more to have $37 total.

• After working for 4 days, Derek makes $37 total.

• After 4 hours of work, Derek now makes $37 an hour instead of $9.25.

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

• Total Cost of a taxi

• Total Miles in taxi

Graph

• A

• B

• C

• D

Graph

• A

• B

• C

• D

What is the equation of the asymptote?

• x = -3

• x=5

• y= -3

• y=5

What is a, the starting term, for the function: f(x) = 300(1.16)^x?

• 300

• 1.16

• .16

• x

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

• I don't know

Evaluate the function for the given value:

• 24

• -24

• 18

• 15

• -18

How do you read f(x)?

• f x

• f of x

• f parenthesis x

• f with an x inside parenthesis

• f with an x