Give two parametric representations for the plane curve.y = 2x - 7
What will be an ideal response?
Answers will vary. Two possible representations are as follows:
x = 
t, y = t - 7;
x = 
, y = t - 14
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Solve the problem.A tank initially contains 100 gal of brine in which 40 lb of salt are dissolved. A brine containing 
of salt runs into the tank at the rate of 4 gal/min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 3 gal/min. Find the solution to the differential equation that models the mixing process.
A. y = 4(50 + t) - 
B. y = 4(50 + t) - 
C. y = 2(100 + t) - 
D. y = 2(100 + t) - 
Solve the problem.The following prices per pound of ocean perch were found at seven supermarkets: $6.59, $7.49, $7.39, $7.59, 
$7.29, $6.39What is the mode?
A. $7.39 B. $7.29 C. $7.59 D. $6.59
Solve the problem.A small computing center has found that the number of jobs submitted per day to its computers has a mean of 66 jobs and a standard deviation of 5. Where do we expect the number of jobs per day to fall most of the time (95.4%)?
A. between 61 and 71 jobs per day B. between 51 and 81 jobs per day C. between 56 and 81 jobs per day D. between 56 and 76 jobs per day
Divide.
A. 0.42 B. 4.2 C. 14.2 D. 1.42