Solve the equation. Use a calculator where appropriate. If the answer is irrational, round to the nearest hundredth.log 4x = log 5 + log (x - 4)
A. 20
B. - 
C. 
D. -20
Answer: A
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Find the indicated probability.The following table displays a distribution for a group of retired people by career and age at retirement. 
Suppose one of these people is selected at random. Find the probability that the person was a secretary or that they retired between ages 56 and 60. Round your answer to the nearest thousandth.
A. 0.063 B. 0.253 C. 0.444 D. 0.507
Solve the problem.Find a curve through the point 
whose length integral, 1 ? x ? 2, is 
A. y = 
x3
B. y = 
x4
C. y = 3x4
D. y = 3x3
Write in exponential notation. Do not evaluate.(-2)(-2)(-2)(-2)
A. 8 B. (-2)2 C. (4)2 D. (-2)4
Use Heron's formula to find the area of the triangle. Round to the nearest square unit.a = 14 meters, b = 20 meters, c = 10 meters
A. 31 square meters B. 62 square meters C. 124 square meters D. 126 square meters