Algebra I Unit 4b Review

Function f represents the number of animals in a zoo as a function of years since the zoo opened. What is the domain and range of function f?

• Domain: all numbers from 200 to 600. 

  Range: all numbers from 1999 to 2003.

• Domain: whole numbers only from 1999 to 2003.

  Range: whole numbers only from 200 to 600. 

• Domain: all numbers from 1999 to 2003.

  Range: whole numbers only from 200 to 600. 

• Domain: whole numbers only from 1999 to 2003.

  Range: all numbers from 200 to 600. 

       A class was conducting a survey to find the average score as a percentage on a test in their class. Before they conducted the survey each student wrote their guess, x, on the table below. After the survey, they found the actual average was 85%. Note: v(x) represents the absolute guessing error.

Select all true statements.

• When the initial guess is 70, v(70) has a value of 15.

• When the initial guess is 90, v(90) has a value of -5.

• When the initial guess is 80, v(80) is 5.

• The equation v(x)=|x-85| gives us the absolute guessing error when the initial guess is x.

• When v(x)=15, the initial guess could be 70 or 100.

Which equation represents the function?

The equation m=39g gives the distance in miles, m, that a car can travel using g gallons of gas.

If the car has gone 468 miles, how much gas was used?
_______ gallons of gas

The equation m=39g gives the distance in miles, m, that a car can travel using g gallons of gas.

If the car has gone 468 miles, how much gas was used?
Write an equation that represents the inverse function.

The cost of holding a ceremony at the botanical garden is a function of n, the number of people in attendance. The cost function, C, can be represented with the function rule on the picture.

How much does it cost to have a party for 7 people?

The cost of holding a ceremony at the botanical garden is a function of n, the number of people in attendance. The cost function, C, can be represented with the function rule on the picture.

How much does it cost to have a party for 17 people?

The cost of holding a ceremony at the botanical garden is a function of n, the number of people in attendance. The cost function, C, can be represented with the function rule on the picture.

How much does it cost to have a party for 25 people?

The cost of holding a ceremony at the botanical garden is a function of n, the number of people in attendance. The cost function, C, can be represented with the function rule on the picture.

How much does it cost to have a party for 27 people?

The cost of holding a ceremony at the botanical garden is a function of n, the number of people in attendance. The cost function, C, can be represented with the function rule on the picture.

What's the domain?

• All numbers greater than 0 but less than or equal to 30

• All whole numbers greater than 0 but less than or equal to 30

• {250, 300, 450}

• All numbers between 250 to 450