Evaluating a Piecewise Function

Evaluate the function when x = 4  {HINT: Should you substitute into the top equation or the bottom equation?}

• f(4) = 2(4) - 5 = 3

• f(4) = 2(4) - 5 = -1

• f(4) = ½(4) + 1 = 3

• f(4) = 4

Evaluate the function when x = 6

• f(6) = -5

• f(6) = 4

• f(6) = 2

• f(6) = 7

What is f(13)?

• 34

• 4

• 166

• cannot be determined

A school's fair committee wants to sell t-shirts for their school fair. They found a supplier that sells t-shirt for P165 per piece but can charge P15,000 for a bulk order of 100 shirts and P120 for each excess t-shirt after that. Use a piece-wise function to represent the cost in terms of the number of t-shirts purchased.

Which of the following id the correct piecewise function for this problem?

• 
• 
• 
• 

What is f(-2)?

• 4

• 1

• 1

• DNE

• -253

• 41

• -7

• 47

For the graph shown. Which selection is the correct way to write the piecewise function?

• 
• 
• 
• 

Select the correct range for this piecewise function.

• A
• B
• C
• D