Perform the indicated operations and simplify the result. Leave the answer in factored form.
? 
A. - 
B. - 
C. 
D. - 
Answer: B
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Solve the problem.What happens if you set B = -2? in the angle sum formulas for the sine and cosine functions? Do the results agree with something you already know?
What will be an ideal response?
Solve the problem.An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 750 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost?
A. 5 P1 planes and 17 P2 planes
B.
| 9 P1 planes and 13 P2 planes |
C. 7 P1 planes and 11 P2 planes
D. 11 P1 planes and 7 P2 planes
Solve the problem.Regrind, Inc. regrinds used typewriter platens. The cost per platen is 
The cost to regrind 100 platens is 
Find the linear cost function to regrind platens. If reground platens sell for 
each, how many must be reground and sold to break even?
A. C(x) = 1.20x + 280 break-even = 37 B. C(x) = 1.20x + 400 break-even = 41 C. C(x) = 1.20x + 280 break-even = 288 D. C(x) = 1.20x + 400 break-even = 54
Find the indicated derivative.
Find 
.
?
A. 
B. 
C. 
D. 
E. 