Simplify. Write your answers in the form of a+bi, where a and b are real numbers.(4 + 3i)(4 - 3i)
A. 16 - 9i
B. 7
C. 16 + 9i
D. 25
Answer: D
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Use an Euler diagram to determine whether the argument is valid or invalid.Some cars are considered sporty.Some cars are safe at high speeds.? Some sports cars are safe at high speeds.
A. Invalid B. Valid
Solve the problem.The data below represent the average monthly cost of natural gas in an Oregon home. 
Above is the graph of 47.35 sin x. Make a scatter diagram of the data. Find the sinusoidal function of the form 
which fits the data.
What will be an ideal response?
Convert the radian measure to degrees. Give answer using decimal degrees to the nearest hundredth. Use 3.1416 for ?.-3.4
A. -194.81° B. -195.11° C. -389.32° D. -389.62°
Name the quadrant in which the angle ? lies.cot ? > 0, sin ? < 0
A. I B. II C. III D. IV