Name:    04-09 Sample Quiz - Rational Equations in Context

Multiple Choice
Identify the choice that best completes the statement or answers the question.

1.

 Kevin ran 6 miles in the time it took Michelle to run 4 miles.Kevin runs at a rate of faster than Michelle.How fast was Michelle running?
 a. 4 miles per hour c. 6 miles per hour b. 5 miles per hour d. 9 miles per hour

2.

 Starting from the same place a plane took 1 hr longer to fly 705 mi to Atlanta, than to fly 470 mi to New Orleans.
If the plane flew at the same rate for the entire trip, what was the flying time for the shorter leg?

 a. hr c. hrs b. 1hr d. 2 hrs

3.

A wedding planner is preparing a wedding reception dinner and has determined that the overall cost will require \$25 for each guest that attends.  This situation can be represented by , where is the independent variable and represents the number of guest and is the dependent variable and represents the cost of the reception.
Which best describes the appropriate DOMAIN of this situational function?

 a. The set of Integers  (i.e. {..... –2, –1, 0, 1, 2, ......}) b. The set of Whole Numbers (i.e. { 0, 1, 2, 3,  ......}) c. The set of All Real Numbers where d. The set of All Real Numbers where

4.

 A balloon’s volume increases from 8 liters to 8.5 liters during which time the temperature increased 18° Kelvin.  Using Charles’ Law, determine the original temperature of the room in Kelvin.Charles Law:  Given we know:,   ,   ,

 a. c. b. d.

5.

The equation for compound interest is where P is the initial amount invested, r is the interest rate as a decimal, n is the number of times compounded annually, and t is the number of years.

Which function below best represents how the change in the number of compounds per year (n) increases the value of the account after investing \$25 at 12% interest for 25 years.

 a. c. b. d.