Find the second derivative of the function.r = 
(3 - ?)
A. 
= 
B. 
= - 
- 1
C. 
= - 
- 1
D. 
= 
- ?
Answer: A
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List the indicated feature of the figure.The faces of
A. 
, 
, 
, 
, 
, 
, 
, 
, 
, 
, 
, 
B. Cannot be identified
C. A, B, C, D, E, F, G, H
D. ?ABCD, ?ABGF, ?AFED, ?BCGH, ?CHED, ?EFGH
Solve the problem. Round your answer, if appropriate.One airplane is approaching an airport from the north at 140 km/hr. A second airplane approaches from the east at 265 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 30 km away from the airport and the westbound plane is 21 km from the airport.
A. -534 km/hr B. -133 km/hr C. -400 km/hr D. -267 km/hr
Solve the equation for all values 0 ? x ? 2?.
cos 2x = 1
A. x = 0, 
, ?, 
B. x = 
, 
, 
, 
C. x = 
, 
, 
, 
D. No solution
Find the best buy and give the unit price.Brand A 24 oz for $12.24Brand B 20 oz for $10.00
A. Brand A, $0.50 B. Equal value C. Brand B, $0.50 D. Brand A, $0.51