Find the probability.Suppose that an honest coin is tossed ten times. What is the probability that it will come up heads at least twice?
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Jill scored a 78 on the first of five 100-point exams in Stat 101. How many points must she average on the next four exams in order to raise her overall average to 90%?
A. 97 points B. 93 points C. 92 points D. 102 points E. none of these
Establish the identity.
= - tan(6?) tan(2?)
What will be an ideal response?
Use the given conditions to write an equation for the line in point-slope form.Passing through (7, 4) and (6, 2)
A. y - 4 = 2(x - 6) or y - 2 = 2(x - 7) B. y + 4 = 2(x + 7) or y + 2 = 2(x + 6) C. y - 4 = 7(x + 7) or y - 2 = 6(x - 4) D. y - 4 = 2(x - 7) or y - 2 = 2(x - 6)
Solve the problem.The diagram shows the roads connecting four cities.WX
YZThe matrix A below represents the number of routes between each pair of cities without passing through another city. 
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Calculate A3. What information is given by the entry in row 2, column 3 of A3?
A. There are 5 ways to travel between cities X and Y by passing through exactly three cities
B. There are 4 ways to travel between cities X and Y by passing through one city
C. There are 5 ways to travel between cities X and Y by passing through exactly two cities
D. There are 4 ways to travel between cities X and Y by passing through at most two cities