Simplify. Assume that all variables are nonzero.
A. 0
B. 1
C. Undefined
D. 89
Answer: B
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Let f be the function defined by 
.
?
Find the differential of f.
?
dy = __________
?
Find the approximate change in y if x changes from 3 to 3.01.
?
dy = __________
?
Find the actual change in y if x changes from 3 to 3.01.
?
__________
What will be an ideal response?
Divide.
A. 
+ 
i
B. 
+ 
i
C. - 
- 
i
D. - 
- 
i
Solve the problem. Round your answer to the nearest tenth unless indicated otherwise.Would you be liable to get a traffic ticket traveling at 57 mph in a 65-kph speed zone? If so, by what amount in miles per hour would you have exceeded the limit? Round your result to the nearest mile per hour.
A. No. B. Yes. 27 mph C. Yes. 17 mph D. Yes. 92 mph
Solve the problem.A cellular phone company determines a monthly bill from the x number of minutes of usage. The amount of the bill, B(x), (in dollars) is given by the function: 
Determine the bill of a customer who uses her cellular phone 25.00 minutes during the month.
A. $33.30 B. $748.50 C. $25.00 D. $3.50