Indicate whether the statement is true or false.A system of linear inequalities can have solutions in only one quadrant.
A. True
B. False
Answer: A
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In the LORAN (LOng RAnge Navigation) radio navigation system, two radio stations located at A and B transmit simultaneous signals to a ship or an aircraft located at P. The onboard computer converts the time difference in receiving these signals into a distance difference |A| - |B|, and this, according to the definition of a hyperbola, locates the ship or aircraft on one branch of a hyperbola (see the figure). Suppose that station B is located L = 480 mi due east of station A on a coastline. A ship received the signal from B 1280 microseconds (?s) before it received the signal from A. Assuming that radio signals travel at a speed of 1000 ft/?s and if the ship is due north of B, how far off the coastline is the ship? Round your answer to the nearest mile. Select the correct answer.
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Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = -5
B. none
C. x = 0, x = - 
D. x = -25
Use the given graph of f(x) = ax2 + bx + c to solve the specified inequality.f(x) > 0
A. no solution B. x < -4 or x > 3 C. x < -4 D. -4 < x < 3
Use the formula for the nth term to find r.a = -3, r > 0, a5 = -243
A. 
B. 81
C. 3
D. 9