Linear Equation Interpret

A school wants to rent a cotton candy machine for a fundraiser. There is a deposit to rent it plus an additional $8 per hour. The total cost to rent the machine for 5 hours is $115, Assume the relationship is linear. What is the rate of change. How much is the deposit?

• ROC: $8/1 hr; Deposit Fee: $115

• ROC 8 hours/$1 Deposit Fee: $5

• ROC $8/1 hr Deposit Fee: $75

• ROC $5/1 hr; Deposit Fee: $75

The art club collected $15 per member. The amount of money in the account after dues were collected from 17 members was $300. Assume the relationship is linear. Find and interpret the initial value.

• The art club had $45 to begin with.

• The art club makes $45 per member.

• The art club has $300 to start with.

Before a movie began, a theater had people waiting in the seats. During each of 4 movie trailers, 7 more people came into the theater. When the movie started 82 people were in the theater. Assume the relationship is linear. Find and interpret the initial value.

• There were 4 movie trailers.

• The theater had 7 people to start with

• The theater had 54 people to start with.

• The theater had 75 people to start with.

Jenny writes the equation y = 1/2x +5.
Why is she incorrect?

• The slope is -2, the equation should be
  y = -2x + 5

• The y-intercept is 4, the equation should be y = -2x + 4

• The slope is -1/2, the equation should be
   y = -1/2x + 5

• The y-intercept is -5, the equation should be y = -2x - 5

What is the equation for this graph?

• y = ⅔ x + 3

• y = -⅔ x + 3

• y = ⅔ x - 3

• y = -⅔ x - 3

• Taylor can write 6 words per minute
• Taylor can write 25 words per minute
• Taylor can write 50 words per minute
• Taylor can write 150 words per minute

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

find the slope

• 3/2

• -3/2

• (-0,-3)

• none of the above

A restaurant investigated the correlation between the prices and the number of customers.  The linear model below represents this situation, where x is the average meal price (in dollars), and y is the number of daily customers.  Interpret the slope.
y = 437 - 18x

• The average price per meal is $18.

• The average number of daily customers is 18.

• If the average meal price decreases by a dollar, the number of daily customers decreases by 18.

• If the average meal price increases by $1, the number of daily customers decreases by 18.

At the beginning of the summer, Jenna had saved $141.  To earn money of the summer, she is working part time at the local community center.  She will earn $32 per day of work.  If x represents the number of days she works, which of the following equations represents how much money she will have, including her savings?

• y = 141-32x

• y = x + 141

• y = 32x + 141

• y = 141x + 32