Solve the equation by the quadratic formula.
+ x + 
= 0
A. -5 ± 
B. -10 + 
C. 5 + 
D. 5 ± 
Answer: A
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Provide an appropriate response.Simplify by applying the distributive principle and combining like terms: 
Fill in the blank(s) with the appropriate word(s).
Solve the problem.In the study of alternating electric current, capacitive voltage is given by 
, where f is the number of cycles per second, i is the maximum current, and t is the time in seconds. Solve the equation for t.
A. t = 2?f cos 
B. t = 2?f arccos 
C. t = 
arccos 
D. t = 
arccos 
Find the probability.Each person in a group of students was identified by his or her hair color and then asked whether he or she preferred taking classes in the morning, afternoon, or evening. The results are shown in the table below. Find the probability that a student preferred morning classes given that he or she has blonde hair.Hair ColorClass Time PreferenceBlondeBrunetteReheadMorning452510Afternoon401550Evening352030
Fill in the blank(s) with the appropriate word(s).
Graph the function.Use the graph of f(x) = log x to obtain the graph of g(x) = log x - 1.
A. 
B. 
C. 
D. 