Find the domain of the expression.
?
?
A. All real numbers x such that x ? 2
B. All real numbers x such that x ? 2
C. All real numbers x such that x > 2
D. All nonnegative real numbers x such that x < 2
E. All real numbers x such that x ? 2
Answer: C
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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.
Is the slope of the graph positive or negative and is the slope constant, or does it change over time?
A. Negative, constant B. Negative, changes over time C. Positive, changes over time D. Positive, constant
Find the equation in standard form of the parabola whose graph is shown.
A. y = -x2 - 2 B. x = -y2 - 2 C. x = y2 - 2 D. x = -y2 + 2
Divide.
A. 25x2 + 25x + 25
B. 25x2 + 25x + 25 + 
C. 25x2 - 25x + 25
D. 25x2 + 25x + 25 + 
Convert the units using two or three unit fractions.9 yd = 
in.
A. 27 B. 108 C. 162 D. 324