Expand. Assume that all variables represent positive real numbers.logb yz4
A. logb y + logb4z
B. 4 logb y + 4 logb z
C. 4 logb yz
D. logb y + 4 logb z
Answer: D
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Solve. Then graph. Write the solution set using both set-builder notation and interval notation.4x ? 32
A. {x
x > 8}, (8, ?)
B. {x
x ? 8}, [8, ?)
C. {x
x < 8}, (-?, 8)
D. {x
x ? 8}, (-?, 8]
Determine whether the given constant is a solution to the given polynomial equation.-9x3 + x2 - 3x + 6 = 0; -1
A. Yes B. No
Solve the equation.-2.1 = 14 - x
A. x = 11.9 B. x = 15.6 C. x = 16.1 D. x = 11.4
Solve the problem.The number of family practice physicians in a certain country can be approximated by the equation 
where x is the number of years since 2010 and y is the number of physicians in thousands. Explain the meaning of the slope in this specific equation.
A. The slope, 
, means every 10 years, the number of family practice physicians in this country increases by 41 thousand.
B. The slope, 
, means every 10 years, the number of family practice physicians in this country decreases by 41 thousand.
C. The slope, 
, means every 41 years, the number of family practice physicians in this country decreases by 10 thousand.
D. The slope, 
, means every 41 years, the number of family practice physicians in this country increases by 10 thousand.