Solve the system using matrices.5x - 2y = -1 x + 4y = 35
A. (3, 9)
B. (2, 8)
C. (3, 8)
D. (2, 9)
Answer: C
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Solve.How long will it take for the population of a certain country to triple if its annual growth rate is 5%? (Round to the nearest year.)
A. 60 years B. 22 years C. 1 year D. 10 years
Solve the problem.Find the range and the standard deviation of the following voltages (in volts) of a sample of watch batteries: 1.212, 1.199, 1.201, 1.202, 1.199, 1.198.
A. Range = 0.014 V; standard deviation = 0.0040 V B. Range = 0.013 V; standard deviation = 0.0039 V C. Range = 0.013 V; standard deviation = 0.0040 V D. Range = 0.014 V; standard deviation = 0.0052 V
Solve the problem.If a projectile is fired with an initial velocity of v = 700 feet per second at an angle of 
with the horizontal, it will follow a parabolic path described by 
Assuming the ground is flat, find the total distance traveled by the projectile graphically.
A. 6994 ft B. 2271 ft C. 20 ft D. 13,989 ft
Write as the sum and/or difference of logarithms. Express powers as factors.log 
A. log(x - 1) + log(x2 + x + 1) - 3 log x B. log x3 - log 1 - 3 log x C. log(x - 1) + log(x2 + 1) - 3 log x D. log 1 - 3 log 1 - 3 log x