Bellringer before Unit 3 Quiz

Determine whether the relation is a function. 

• Function

• Not a Function

Determine whether relation is a function.

• Function

• Not a Function

State the domain and range of the graph.

• Domain: 1, 4, 6, 5, 3

  Range: 2, 3, 5, 7, 9

• Domain: 2, 3, 5, 7, 9

  Range: 1, 3, 4, 5, 6

State the domain and range of the graph.

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• 
• 
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Sandra is selling brownies to save money for the French Club. The equation 
f(x)=0.5x-10 represents her profit, f(x), for selling x brownies. Which statement is true about the value of f(78)?

• The value f(78) = 29, and it represents a profit of 29 dollars after selling 78 brownies.

• The value f(78) = 29, and it represents a profit of 78 dollars after selling 29 brownies.

• The value f(78) = 49, and it represents a profit of 49 dollars after selling 78 brownies.

• The value f(78) = 49, and it represents a profit of 78 dollars after selling 49 brownies.

A taxi company charges a $5 flat fee plus $1.25 per mile traveled. The formula C(x)=1.25x+5 represents this situation. Carl is traveling 24 miles. How much is he going to have to pay, C(24)?

Find f(2)

Evaluate the function when x = -2

h(x) = 3x-7

h(-2) = ______

 Evaluate the function when x = 0

h(x) = 3x-7

h(0) = _________

 Evaluate the function when x = 5.

h(x) = 3x-7

h(5) = ________