Evaluating Functions for Inputs in a Given Domain

Evaluate f(2):

f(x)=3x+1

• 7

• 9

• 11

• 13

If f(x)=2(3^x)+1, what is the value of f(2)?

(Substitute and be careful with order of operations)

• 19

• 37

• 13

• 20

If g(x)=2x+5, what is the value of g(4)?

Which have the same value when
a(x)=x²

• a(-2)

• a(0)

• a(2)

• a(4)

Given f(x) = 3x² + 1, what is f(t + 2)?

• 3t² + 3

• (3t + 2)² + 1

• 3(t + 2)² + 1

• none of these

When the input of the function is -3, what is the output of the function?

The idea of pairing each member of the domain with each member of the range referred to as __________.

• Input

• Range

• Domain

• Mapping

What is the value of x in:

f(4) = 3x - 1

• 11

• 4

• -1

• 0

Explain how range and domain are related to the concept of function mapping.

• The range and domain determine the number of solutions of a function.

• The range and domain determine the slope of a function.

• The range and domain are used to calculate the derivative of a function.

• The range and domain define the set of possible inputs and outputs of a function.

Given f(x) = 2x + 1, find the range value if the domain value is 1.75.