Solve the equation. Check your solution.10n - 5 = 25
A. {24}
B. {7}
C. {3}
D. {20}
Answer: C
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Use the quotient rule to divide and simplify.
A. 8x5
B. 8x5 
C. x5 
D. x5 
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.x + 3y + 2z=114y + 9z=-12x + 7y + 11z=- 1
A. {(
+ 20, 
+ 3, z)}
B. {(
+ 20, - 
+ 3, z)}
C. {(
+ 20, - 
- 3, z)}
D. {(- 
+ 20, - 
+ 3, z)}
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
The percent P of men 65 years of age or older in the labor force can be modeled by 
, where x is the number of years past 1890 (Source: U.S. Bureau of the Census). Plot this function using a graphing utility. What range of x-values and y-values do you need to use to view this graph for the years 1890 to 2010?
?
A. x-min = 0, x-max = 120y-min = 0, y-max = 60 B. x-min = -120, x-max = 0y-min = 0, y-max = 70 C. x-min = -120 , x-max = 120y-min = 0, y-max = 50 D. x-min = 0, x-max = 90y-min = 0, y-max = 50 E. x-min = 0, x-max = 120y-min = 0, y-max = 70