Compute the gradient of the function at the given point.
A. 
i + 
j + 
k
B. 
i + 
j + 
k
C. 
i + 
j + 
k
D. 
i + 
j + 
k
Answer: A
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Solve the problem.On June 7, Donaldson's Trucking accepts a $3,200 note in settlement of a bill. The note is for 180 days at 8% interest. Donaldson sells the note at a 10% discount rate on July 29. Find the proceeds.
A. $3,174.01 B. $3,233.34 C. $3,209.67 D. $3,208.75
Solve the problem.Sue can sew a precut dress in 3 hours. Helen can sew the same dress in 2 hours. If they work together, how long will it take them to complete sewing that dress? Give your answer rounded to one decimal place, if necessary.
A. 5 hr B. 1.8 hr C. 1.2 hr D. 2.5 hr
Solve the problem.Suppose that the population of a certain city during a certain time period can be approximated by 
where x is time in years since 2010. By sketching a graph of P(x), estimate during what time period the population of the city would be increasing.
A. Between 2015 and 2045 B. Between 2010 and 2024 C. Between 2015 and 2038 D. Between 2010 and 2038
The graphing calculator screen shows the graphs of the two given functions, and the display gives the coordinates of one of the solutions. Find the other solution.
y = -x2 + 4x + y = 4
A. (3, 1) B. (1, 3) C. (-1, 5) D. (7, -3)