quiz: Linear equation word problems

Write the equation that represents this word problem:

Luis makes tacos at a restaurant. He already made 8 tacos, and can make 3 tacos per minute.

• y= 8x + 3x

• y= 3x + 8

• y= 8x + 3

• y= 3 + 8

• Answer Not Here

Write the equation that represents this word problem:

Nicholas received $100 for his birthday. He decides to spend $20 per day on whatever he wants.

• y= 20x + 100

• y= -20x - 100

• y= 20x - 100

• y= -20x + 100

• Answer Not Here

Write the equation that represents this word problem:

Yalda made $800 this month from working. She spends $25 each time she goes out to eat dinner.

• y= 15 - 800x

• y= 800 - 15x

• y= -800 + 15x

• y= -800 - 15x

• Answer Not Here

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a boat.  Write an equation for the total cost to rent the boat for x hours.

• x = 2y + 15

• y = 15x + 2

• x = 15y + 2

• y = 2x + 15

Bikes rent for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation.

• y = 4x + 1.50
• y = 1.50x + 4

The cost to rent a car for a day is $30 plus $0.25 per mile. Write an equation to represent the total cost (y) in terms of the number of miles driven (x).

• y = 0.25x - 30

• y = 30 + 0.25x

• y = 30x + 0.25

• y = 30 - 0.25x

The value of a car depreciates at a rate of $1000 per year. If the current value is $20,000, write an equation to represent the value (y) in terms of the number of years (x).

• y = 20000 * 1000x

• y = 20000 / 1000x

• y = 20000 - 1000x

• y = 20000 + 1000x

Faviel is climbing down a mountain 230 feet high, descending 40 feet per minute. How long will it take him to come back down?

• 6 minutes for Faviel to return

• 5.70 minutes for Faviel to return

• 5.75 minutes for Faviel to return

• 5 minutes for Faviel to return

Sally has $150 in her savings account and saves $40 per month.  sally saved for 16 months, how much does she have in her savings account

• Sally has 800$ in her savings account

• Sally has 790$ in her savings account

• Sally has 640$ in her savings account

An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute.  Use your equation to find the altitude of the plane after 5 minutes.

• 20,000 feet after 5 minutes
• 40,000 feet after 5 minutes
• 148,000 feet after 5 minutes