Solve for the indicated variable.I = Prt, for r (simple interest)
A. r = 
B. r = 
C. r = 
D. r = P - tI
Answer: A
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Find the exact value of the expression.sin 260° cos 20° - cos 260° sin 20°
A. - 
B. - 
C. 
D. - 
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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Find the slope-intercept form of the equation of the line with the given properties.x-intercept = 2; y-intercept = 9
A. y = - 
x + 9
B. y = - 
x + 2
C. y = - 
x + 2
D. y = 
x + 9
Write the logarithmic equation as an exponential equation.log5x = 2
A. 25 = x B. x2 = 5 C. 52 = x D. 5x = 2