Use a graph to determine the number of solutions the system has.4x - 6y = 212x - 18y = 7
A. Infinitely many solutions
B. No solution
C. One solution
Answer: B
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For the triangle, based on the side lengths given, decide whether it is equilateral, isosceles, or scalene. 
A. isosceles B. scalene C. equilateral and isosceles
As part of a study on the metabolism of athletes, 400 college basketball players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 215 pounds and the standard deviation is 15 pounds.A weight of 260 pounds corresponds to a standardized value of
A. 1. B. 2. C. 3. D. 4. E. none of these
Solve the equation.
= 
A. 
B. - 
, 
C. - 
, 
D. empty set
Solve the problem.Suppose that the speed of a car, measured in miles per hour (mph), is monitored for some short period of time after the driver applies the brakes. The following table and graph relate the speed of the car to the amount of time, measured in seconds (sec), elapsed from the moment that the brakes are applied. What is happening to the speed of the car during this time frame? In which of the time intervals does the speed change the most?
A. With increasing elapsed time, the speed increases. The speed changes most during the time interval from 8 seconds to 10 seconds. B. With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 2 seconds to 4 seconds. C. With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 8 seconds to 10 seconds. D. With increasing elapsed time, the speed increases. The speed changes most during the time interval from 2 seconds to 4 seconds.