Express as a single logarithm and, if possible, simplify.logb 3x + 4(logb x - logb y)
A. 
B. logb 
C. logb (3x + x4 - y4)
D. logb 
Answer: B
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Provide an appropriate response. Weights of adults in a certain age group are normally distributed. Which of the following are plausible values for the mean and standard deviation?
A. Mean = 155 lb, standard deviation = 12 lb B. Mean = 155 lb, standard deviation = -20 lb C. Mean = 160 lb, standard deviation = 25 lb D. Mean = 158 lb, standard deviation = 5 lb
Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.cos 5x + cos 12x = 2 cos 7x cos x
A. 2?
B. -2?
C. 
D. 0
Find the midpoint of the line segment whose end points are given.(9, 9) and (5, 7)
A. (14, 16) B. (4, 2) C. (7, 8) D. (2, 1)
Simplify the expression.- 
+ 9y + 
y - 11 + 
y
A. 
y - 
B. 
- 6
C. 
y + 6
D. 
y