Use a calculator to approximate the expression. Write your answer in scientific notation, and round to the nearest tenth as needed.(2.8 × 105)(2.9 × 107)
A. 81 × 1035
B. 8.1 × 1012
C. 81 × 1012
D. 8.1 × 1035
Answer: B
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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
If possible, find the slope of the line passing through the two points.
, 
A. 
B. 
C. 
D. 
Find the exact value of the expression.sec 1305°
A. 
B. 
C. 2
D. - 
Match the equation with its graph.y = 4(x + 4) + 1
A. 
B. 
C. 
D. 