Quantitative Algebra (5/6)

Quantitative Algebra (5/6)

Multiple Choice

A man is climbing down from 100 feet high descending 30 feet per minute.

• y = 100 - 30x

• y = 100 + 30x

• y = 100x + 30

• y = 100x - 30

Multiple Choice

An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model the situation.

• y = - 2,000x + 30,000

• y = - 2,000x - 30,000

• y = 30,000x + 2,000

• y = -30,000x + 2,000

Multiple Choice

Suppose that a bike rents 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

• y = -4x +1.50

• y = 4x - 1.50

Multiple Choice

Suppose that a bike rents for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation.  After how many hours will the bike rental cost a total of $10?

• 4 hours
• 3 hours
• 2 hours 
• 1 hour

Multiple Choice

In order to join an online learning community, there is a $20 startup fee and a $5 monthly fee. Write an equation in slope-intercept form that models this situation.

• y = 20x + 5

• y = 5x +20

• y=-5x + 20

• y = 5x - 20

Multiple Choice

Solve the system.

• (2, 16)

• (4, 2)

• (1, 13)

• (1, -3)

Multiple Choice

How many solutions will this system have? (Hint: There is a pink line and a blue line, one on top of the other.)

• one solution

• no solution

• infinitely many solutions

Multiple Choice

What is the solution to the system?

• (3, -1)
• (2, -6)
• No Solution 
• (6, -2)

Multiple Choice

What is the solution to the system?

• (3, -5)

• (-2, -5)

• (-5, -14)

• (2, -5)

Multiple Choice

What is the solution to the system?

• (0, 3)

• (1, -1)

• (-3, 1)

• (1, 3)