2. An electronics store makes a profit of $55 for every standard CD player sold and $77 for every portable CD player sold. The manager’s goal is to make at least $385 a day on sales of both standard and portable CD players. If s represents the number of standard CD players sold, and p represents the number of portable CD players sold, which inequality and graph represent the manager’s daily goal?

http://tinypic.com/r/15hbkmu/6

A. Graph A

B. Graph B

C. Graph C

D. Graph D

3. Classify the system.

x – y = -3

-3x + 2y = 3

A. independent

B. inconsistent

C. dependent

6. A graph of a system of three linear equations in three variables is shown below. How many solutions does the system have?

http://tinypic.com/r/14w69e1/6

A. 0

B. 1

C. 2

D. infinitely many

7. In chemistry, Charles Law states that if the pressure remains constant, the volume of an ideal gas varies directly with the temperature in degrees Kelvin. Suppose a gas has a volume of 100 mL at 250°K. Which proportion could you use to find the volume v of the gas if the temperature decreases to 150°K?

A. 100/250 = 150/v

B. 250/150 = v/100

C. 100/250 = v/150

D. 100/150 = 250/v

## Need Help With These Algebra Questions! Please?

January 13th, 2013 admin