Provide an appropriate response.If r(t) is the rate of change of revenue, then 
isi) the total revenue up to time b.ii) the total revenue from time a to time b.iii) the change of revenue at any moment.
A. Only ii is correct.
B. Both ii and iii could be correct.
C. Only iii is correct.
D. Only i is correct.
Answer: A
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Solve the problem.Find the equation of the tangent to the parabola x2 = -2y at the point (2
, -6).
A. y = - 
x - 6
B. y = 
x - 3
C. y = - 2
x + 6
D. y = - 2
x - 18
Calculate the work done by the force F along the path C.F = 7xi - 5x4y2j + (-7z - 5y2)k ; the path is 
where C1 is the straight line from 
to 
C2 is the straight line from (1, 0, 0) to (1, 1, 0), and C3 is the straight line from (1, 1, 0) to (1, 1, 1)
A. W = 
B. W = 
C. W = - 
D. W = - 
Solve by using the multiplication principle to clear fractions.- 
= - 
- 
x
A. - 
B. 
C. 
D. 
For the following two concentric circles, what would the radius of the larger circle need to be in order for the area of the inner circle to equal the shaded area between the two circles?
What will be an ideal response?