Real World Linear

The drama club sold tickets to a play for $5 each. They also made $55 total in soda and popcorn sales. If the drama club made a total of $290, how many tickets were sold?

• 47 tickets

• 58 tickets

• 69 tickets

• 113 tickets

The local service center advertises that it charges a flat fee of $50 plus $8 per mile to tow a vehicle. Write an equation that represents the total cost (C) of a service for m miles of towing.

• y=8x+50

• y=50x+8

• C=50m+8

• C=8m+50

Ms. Deppe has $150 in her savings account and saves $40 per month. Which equation represents the amount of money (y) Ms. Deppe has in her account after (x) number of months?

• y=150+40

• y=150x+40

• y=40x+150

Easy Car Rental charges $8.50 an hour plus a rental fee of $25.50. Which equation represents the total charges for x hours?

• y = 8.5 + 25.5

• y = 25.5 + 8.5x

• y = 8.5 + 25.5x

Molly harvests mushrooms in the forests of Oregon and then sells them to local restaurant chefs. The greater the weight of the mushrooms, the greater their value.

w = the weight of the mushrooms

v = the value of the mushrooms

• v is the independent variable and w is the dependent variable

• w is the independent variable and v is the dependent variable

At the beginning of the summer, Jenna had saved $141. She will earn $32 per day of summer work. If x represents the number of days she works, which of the following equations represents how much money she will have, in all, if she spends nothing all summer?

• y = 141-32x

• y = x + 141

• y = 32x + 141

• y = 141x + 32

A company developed the linear model to help budget annual expenses over time.  In the model, x represents the number of years after 2009, and y represents the expense budget in dollars. Interpret the y-intercept.
y = 189,785 + 37,896x

• The company's expense budget for 2009 was $37,896.

• The company's expense budget for 2008 was $189,785.

• The company's expense budget for 2009 was $189,785.

• The company's expense budget for 2008 was $37,896.

In the equation y=mx+b, what does the m represent?

• rate of change (slope)

• y-intercept

• linear

• point-slope

What does 'b" represent in y=mx+b

• initial value (y-intercept)

• an ordered pair

• nothing

• rate of change (slope)

Which of the following situations could be described by the equation y= -25x + 120

• There are 120 people in the football stadium, and 25 more are entering each hour.

• A plumber charges $25 for a house call and $120 per hour.

• A teacher has 120 students. Her third period has 25 students

• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute