9/MA S1 Final

Function w gives the weight of a cat, in kilograms (kg), when it is m months old. Which statement represents the meaning of the equation w(7) = 4 ?

• The cat weighs 7 kg when it is 4 months old.

• The cat weighs 4 kg when it is 7 months old.

• The weight of the cat has been 7 kg for 4 months.

• The cat weighs 4 kg when it is 7 years old.

Tags

CCSS.HSF.IF.A.2

Function d gives the distance of a boat from the dock t seconds after leaving the dock. Distance is measured in meters. The following graph represents d . Select all statements in function notation that represent the situation.

• d(170) = 0

• d(90) < d(160)

• d(10) = 20

• d(30) = d(70)

• d(0) = 0

Tags

CCSS.HSF.IF.A.2

A ball bounces several times after it is dropped. The graph shows the height of the ball over time. Height is measured in meters (m), and time is measured in seconds (sec). Select all statements that are true about the graph and the situation it represents.

• The function reaches its maximum value after the first bounce.

• The horizontal intercepts of the graph show the times when the ball hit the ground.

• The vertical intercept shows when the ball is dropped.

• There are multiple times when the function is at its minimum value.

• The vertical intercept shows the time when the ball hits the ground.

Function R gives the amount of rain measured by a rain gauge t hours since it started raining. The amount of rain is measured in millimeters (mm). What does each expression or equation represent in this situation? R(3)

• the number of hours that the rain fell

• The time that the rain started

• The amount of rain in 3 days

• The amount of rain in 3 hours

Tags

CCSS.HSF.LE.B.5

Given R(0.5) = 14 , what does this statement mean?

• 14 mm fell in the first half hour

• Half an inch fell in 14 hours

• 14 mm fell in 0.5 seconds

• 0.5 mm fell in 14 seconds

Tags

CCSS.HSF.LE.B.5

Use function notation to represent each statement. Six hours after it started raining, the amount of rain was 37 millimeters.

• f(6) = 37

• f(37) = 6

• f(6) < 37

• f(6) = f(37)

Tags

CCSS.HSF.IF.A.2

Use function notation to represent each statement. The amount of rain 90 minutes after it started raining was the same as the amount 120 minutes after it started raining.

• f(90) < 120

• f(90) = f(120)

• f(90) < f(120)

• f(90) = 120

Tags

CCSS.HSF.IF.A.2

Function p represents the number of people in the library on a Monday as a function of hours since the library opened. Here is the graph of function p.

Based on the graph and the situation, which domain and range make sense for function p ?

• Domain: all numbers from 0 to 85. Range: whole numbers from 0 to 14.

• Domain: whole numbers only from 0 to 14. Range: whole numbers only from 0 to 85.

• Domain: all numbers from 0 to 14. Range: whole numbers only from 0 to 85.

• Domain: whole numbers only from 0 to 14. Range: all numbers from 0 to 85.

Functions A and B give the population of City A and City B, respectively, t years since 1990. In each function, population is measured in millions. Which function value is greater: A(4) or B(4)?

• A(4)

• B(4)

• Neither they are equal.

Tags

CCSS.8.EE.B.5

At which value(s) is the following a true statement? A(t) = B(t)

• t = 0

• t = 4

• t = 6

• t = 12