Solve the problem.Rejoyne Inc. has a marginal-profit function given by P'(x) = -2x + 140, where P'(x) is in dollars per unit.This means that the rate of change of total profit with respect to the number of units produced, x, is 
Find the total profit from the production and sale of the first 40 units.
A. $8000
B. $4000
C. $60
D. $100
Answer: B
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Find the velocity, acceleration, and speed of an object with position vector r(t) = Figure 3.png)
What will be an ideal response?What will be an ideal response?
Identify the solid.
A. cylinder B. rectangular solid C. sphere D. cube
In the following table, Y1 is defined by a rational expression of the form 
. Use the table to find the values of p and q.
A. p = -1; q = -2 B. p = -3; q = -2 C. p = -2; q = -1 D. p = -2; q = -3
Solve the problem.For a hyperbolic mirror the two foci are 44 cm apart. The distance of the vertex from one focus is 7 cm and from the other focus is 37 cm. Position a coordinate system with the origin at the center of the hyperbola and with the foci on the y-axis. Find a Cartesian equation for the hyperbola.
A. 
- 
= 5
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 5