Mcgraw Hill Chapter 4 Functions

Use the table to write an equation to determine the number of cups in any number of gallons.

• 12x

• 10+6x

• 16x

• 8+8x

The graph of the cost per ride of the Rapid Rattler Roller Coaster is shown below. According the graph, how much does it cost per ride?

• $6

• $10

• $8

• $4

If f(n) = n + 1/3 , find f 7/8.

• 13/24

• 29/24

• 6/11

• 8/11

The school cafeteria sells bags of chips for $1 and sandwiches for $4. If Romi has $10 to spend on c bags of chips and ssandwiches, graph the equation c=10-4s to find out how many bags of chips and sandwiches Romi can buy.

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Jenna earns $7.50 an hour at her part-time job. The graph shows how much Nora earns working at her job. Compare the functions. Which statement is true?

• The y-intercept for Jenna is greater than the y-intercept for Nora.

• Nora earns more per hour than Jenna.

• Jenna earns more per hour than Nora.

• The y-intercept for Nora is greater than the y-intercept for Jenna. The y-intercept for Nora is greater than the y-intercept for Jenna.

A dog trainer charges an initial consultation fee plus an additional hourly rate for obedience training. The graph shows the total cost for the consultation and hourly rates. Find and interpret the rate of change and initial value.

• The trainer charges $75 per hour. The initial consultation is $50.

• The trainer charges $75 per hour. The initial consultation is $75.

• The trainer charges $50 per hour. The initial consultation is $75.

• The trainer charges $100 per hour. The initial consultation is $100.

For the Fall Festival students take wagon rides in hay around the neighborhood. Six students can fit into each wagon. Determine if the function is linear or not.

• neither

• linear

• nonlinear

• both

Find the equation that represents the graph.

• y = -2x²

• y = 0.25x²

• y = -4x²

• y = 2x²

The graph displays the speed Kelli rides her bike through the neighborhood. Which statement describes the graph?

• Kelli is stopped at a stop sign, then increases her speed as she goes down a hill, the decreases her speed as she goes up a hill.

• Kelli travels at a constant speed, then slows down as she goes up a hill, then speeds up as she goes down the hill.

• Kelli travels at a constant speed, then speeds up as she goes down the hill, then slows down as she goes up a hill.

• Kelli increases her speed at a constant rate, then slows down, then continues at that rate.

Use the expression16x to determine how many cups are in 7 gallons, where x represents the number of gallons.

• 112 cups

• 80 cups

• 128 cups

• 96 cups