If the following defines a one-to-one function, find its inverse. If not, write "Not one-to-one."f(x) = 
A. f-1(x) = 
B. f-1(x) = (x - 3)2
C. f-1(x) = x2 + 3, x ? 0
D. Not one-to-one
Answer: C
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Divide.
A. 
- 
i
B. 
+ 
i
C. 
+ 
i
D. 
- 
i
Make the indicated conversion.Convert 11111000two to octal.
A. 162408 B. 4608 C. 3708 D. 2308
Solve the problem.An office desk costs $6000. After 5 years, it depreciates to a value of $3500. Assuming linear depreciation, answer the following.(i) Write a linear equation that gives the value of the desk, y, in terms of the number of years after it was purchased, x.(ii) Using the equation found in part a, find the value of the desk after 7 years.(iii) After how many years would the desk have no value?
A. (i) y = 6000 - 500x (ii) $3500 (iii) 12 years B. (i) y = 6000 - 400x (ii) $2500 (iii) 12 years C. (i)y = 6000 - 500x (ii) $2500 (iii) 12 years D. (i) y = 6000 + 500x (ii) $9500 (iii) 20 years
Rewrite the statement so the inequality symbol points in the opposite direction and the new statement has the same meaning as the original.2 < 49
A. 49 < 2 B. 49 > 2 C. 49 ? 2 D. 2 > 49