Algebra 2 Honors

Is this a function?  Why or why not? 

• Yes, because none of the domain numbers repeated.
• Yes, because none of the range letters repeated.
• No, because 3 goes to A and 4 goes to A.
• No, because A gets used twice.

What is the domain of this function?
{(0,2), (3,5), (5,8), (7, 11)}

• {2,5,8,11}
• {0,3,5,7}
• [0,7]
• [2,11]

What is the range of this function?
{(9,8), (7,6), (5,4), (3,2)}

• [3,9]
• [2,8]
• {3,5,7,9]
• {2,4,6,8}

What is the range of this graph?

• (-∞,+∞)
• (-2,2)
• (-1,1)
• [-2,2]

What is the range of this function?

• [-2,3]
• (-2,3]
• [-5,4]
• (-5,4]

Evaluate f(6).

• f(6) = 18

• f(6) = 12

• f(6) = 10

• f(6) = 1

Evaluate f(3).

• f(3) = 0

• f(3) = -2

• f(3) = 3

• f(3) = 4

If f(x) = 2x² + 5x - 3, evaluate f(4).

• f(4) = 4

• f(4) = 49

• f(4) = 25

• f(4) = 55

The mathcounts team is taking a field trip.  The cost for each person is $22 to go into the place and the parking will cost $15 for the day. 

• c = 15p + 22
• c = 22p + 15
• p = 15c + 22
• p = 22c + 15

A plumber charges a service fee of $40 plus $25 per hour for labor.
(A) Write a function rule for the total cost of hiring the plumber for a job that takes x hours.
(B) How much would it cost to hire the plumber for a job that takes 4 hours?

• (A) y = 40 + 25x
  (B) $140
• (A) y = 40x + 25
  (B) $185
• (A) y = 40 + 25x 
  (B) $185
• (A) y = 40x + 25 
  (B) $140