Simplify the expression using the order of operations. Write the answer as an improper fraction where appropriate.
A. 
B. 1
C. 2
D. 
Answer: D
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Find the inflection points, if any, of the function.
?
?
A. 
B. 
C. 
D. none
The IQs of students at an Elementary School were measured and found to be normally distributed with a mean of 100 and a standard deviation of 20. Round your answers to four decimal places, if necessary. ? Find the probability that a student selected at random will have an IQ of 140 or higher. ? __________ ? Find the probability that a student selected at random will have an IQ of 120 or higher. ? __________ ? Find the probability that a student selected at random will have an IQ of between 100 and 120. ? __________ ? Find the probability that a student selected at random will have an IQ of 90 or less. ? __________
What will be an ideal response?
Solve the problem.Two tracking stations are on the equator 138 miles apart. A weather balloon is located on a bearing of N 37°E from the western station and on a bearing of N 16°E from the eastern station. How far is the balloon from the western station? Round to the nearest mile.
A. 308 mi B. 370 mi C. 379 mi D. 299 mi
Evaluate the expression.|7 - 17| ? (-8) ÷ (-4)
A. -20 B. -320 C. 320 D. 20