Unit 4 Test REVIEW

Lydia owns a dog-walking service. Her company charges customers a $15 travel fee in addition to $8 for each dog that needs to be walked. Write a linear equation that Lydia can use to determine how much to charge her customers given x number of dogs they need walked.

The table shows the relationship between x and y. Write an equation that describes the relationship between x and y.

Which function is best represented by the graph?

• y = 4x − 2

• y = − 1/4x − 2

• y = −4x + 2

• y = 1/4x + 2

The table shows the amount of money remaining in a bank account after a monthly service fee is withdrawn each month the account is open. Which function shows the relationship between a, the amount of money remaining in the account and m, the number of months the account is open?

• a = 950 − 12m

• a = 950 + 12m

• a = 902 − 60m

• a = 902 + 60m

Calvin is saving money for a down payment on a car. The table shows the relationship between the total amount of money in Calvin's savings account, y, and the number of months he has been saving, x. Based on the table, how much money does Calvin have when he opened the account?

A gaming club charges a one-time membership fee and an additional fee for each game the member rents. The table shows the relationship between the number of games rented, g, and the total cost of membership, m. Which statement is true?

• The one-time membership fee is $45.

• The additional fee to rent each game is $37.50.

• The one-time membership fee is $70.

• The additional fee to rent each game is $18.75.

The graph shows the amount of money Davis earns at his summer job. Which statement best describes Davis's hourly rate of pay?

• Davis earns $10.00 per hour.

• Davis earns $11.25 per hour.

• Davis earns $8.75 per hour.

• Davis earns $20.00 per hour.

The total cost of attending a concert can be described as $93 per person plus $28 for parking. What is the value of the y-intercept?

The table shows the relationship between the amount of money earned and the number of hours worked. Write an equation to represent this relationship.

Which representation matches the equation y = 650 − 15x.

• Representation A

• Representation B

• Representation C