Solve the equation and check your solution.
= 
- 
A. x = -6, -4
B. x = 
C. x = 6, 4
D. No solution
Answer: D
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Solve the problem. Round your answer, if appropriate.One airplane is approaching an airport from the north at 157 km/hr. A second airplane approaches from the east at 299 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 27 km away from the airport and the westbound plane is 23 km from the airport.
A. -313 km/hr B. -626 km/hr C. -469 km/hr D. -156 km/hr
Find the linear function that is the best fit for the given data. Round decimal values to the nearest hundredth, if necessary.
A. y = 0.32x + 2.57 B. y = 0.30x + 2.57 C. y = 0.32x + 4.29 D. y = 0.30x + 4.29
Provide an appropriate response.True or false? If a > 0 and b > 0, 
A. True B. False
Find the integral.
A. sec 2x + C
B. tan 2x + C
C. 
tan2 x + C
D. 
tan x + C