Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
(log4 x + log4 y) - 6 log4(x + 7)
A. log4 
B. log4 
C. log4 
D. log4 
Answer: C
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Divide, if possible. If a quotient is undefined, state so.
A. 24 B. -5 C. -24 D. 5
Solve the inequality. Express your answer using interval notation.-11 ? -2x + 3 ? -1
A. (2, 7)
B. [2, 7]
C. (-7, -2)
D. [-7, -2]
Solve the equation.
= 
A. 
B. 
C. ?
D. {8}
Solve the problem.To find the height of this tree, Sarah marked the tree at eye level, 1.8 meters above the ground. She measured 36 m from the base of the tree and then held a 5-cm ruler vertically in front of her eye until the ruler just obscured the tree above the mark. Using a string tied through a hole in one end of the ruler, Sarah found that the distance from her eye to the ruler was 4.8 centimeters. What was the height of the tree? Round to the nearest unit.
A. 35 m B. 39 m C. 37 m D. 41 m