Solve the problem by using a system of equations.Two cars leave from a city at the same time and travel in the same direction. One car travels one-third and one-third times as fast as the other. After 5 hr, they are 300 mi apart. What are the speeds of the cars?
A. Slower car: 45 mph; faster car: 105 mph
B. Slower car: 50 mph; faster car: 110 mph
C. Slower car: 40 mph; faster car: 100 mph
D. Slower car: 35 mph; faster car: 95 mph
Answer: A
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Use the even-odd properties to find the exact value of the expression. Do not use a calculator.sec (-60°)
A. - 
B. 
C. -2
D. 2
Find a unit vector in the direction of the given vector.
A. 
B. 
C. 
D. 
Solve the system of equations. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12
A. (4, -3, -5, 2)
B. 
C. (-4, 3, 5, -2)
D. No solution
Write the decimal in words.0.1359
A. One thousand three hundred fifty-nine hundred-thousandths B. One thousand three hundred fifty-nine ten-thousandths C. One thousand three hundred fifty-nine hundredths D. One thousand three hundred fifty-nine thousandths