Solve.A nuclear cooling tower cross section is a hyperbola having a diameter of 50 ft at the center. The distance between the two foci is 90 ft. What is the equation for the hyperbola?
A. 
- 
= 5
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: D
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Solve the problem.Find the mass of a solid right circular cylinder of radius 5 and height 4 if its density at any point is proportional to the square of the distance from that point to the lateral edge of the cylinder.
A. 
?k
B. 
?k
C. 1250?k
D. 
?k
The figure shows the graph of a function. At the given value of x, does the function appear to be differentiable, continuous but not differentiable, or neither continuous nor differentiable?x = -1
A. Differentiable B. Continuous but not differentiable C. Neither continuous nor differentiable
Add the Octal numbers 627 and 314.
a. 816 b. 1133 c. 93D d. 941 e. 1143
Solve the problem.Your computer supply store sells two types of laser printers. The first type, A, has a cost of $86 and you make a $45 profit on each one. The second type, B, has a cost of $130 and you make a $35 profit on each one. You expect to sell at least 100 laser printers this month and you need to make at least $3850 profit on them. How many of what type of printer should you order if you want to minimize your cost?
What will be an ideal response?