Equation to Model Situation

A business purchases a computer for $1500. The computer goes down in value $200 each year when the new model is released. Write a function to model the situation.

• y= 1500x- 200

• y= 200x- 1500

• y= 200x + 1500

• y= -200x + 1500

There were approximately 11,000 students enrolled at Western Carolina last year. This figure goes up about 225 each year. Write a function to model this situation.

• y= -225x+ 11000

• y= 225x+ 11000

• y= 225x- 11000

• y= 11000x+ 225

Ted's Taxi service charges a $5 pick up fee plus $2 per mile. Which function describes the situation

• y= 2x+5

• y= 2x- 5

• y= 5x+ 2

• y= 5x- 2

Alan buys a new car for $25,000. It depreciates at a rate of $2000 per year. Which function can be used to find the value after x years?

• y= 25000- x

• y= 2000x- 25000

• y= -2000x+ 25000

• y= 25000x- 2000

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage.  If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?

• C = 0.20x + 15

• C =15 (0.20x)

• C = 15 + x + 0.20

• C = 0.20 + 15x

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

Jenny went to the sale at Kohl's last weekend.  
T-shirts were on sale for $15 each and hoodies were on sale for $20 each.  If she spent $150 total, write an equation to represent this situation.  

• 20x + 15 = y 

• 35x = y 

• 15x + 20y = 150 

• 150 - 20x = 15y 

In order to join a dancing club, there is a $30 startup fee and a $4 monthly fee. Write an equation in slope-intercept form that models this situation.  After how many months will the total cost be $58?

• 7 months

• 6 months

• 5 months 

• 4 months

Would you write a linear equation to model the following situation in slope-intercept form or standard form? 
Mrs. Harris is going to the movies. She spends $10 per ticket and $5 per bucket of popcorn. She only wants to spend $50. 

• Slope-intercept

• Standard form

Would you write a linear equation to model the following situation in slope-intercept form or standard form? 
The cost for a health club membership is $20 per month plus an initial $49 membership fee. 

• Slope-Intercept Form

• Standard Form