Solve.A cruise boat travels 24 miles downstream in 3 hours and returns to its starting point upstream in 6 hours. Find the speed of the stream.
A. 8 mph
B. 6 mph
C. 2 mph
D. 14 mph
Answer: C
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Solve the problem.Use the formula N = Iekt, where N is the number of items at time t, I is the initial amount, and k is a growth constant equal to the percent of growth (expressed in decimal form) per unit of time. How long will it take for the population of a certain country to double if its annual growth rate is 6.9%? Round to the nearest year.
A. 1 yr B. 4 yr C. 29 yr D. 10 yr
Using a calculator, evaluate to four decimal places.log 6664
A. 8.8045 B. 3.3237 C. 9.3045 D. 3.8237
Graph the parametric equations.x = 4 cos t, y = 4 sin t ; 0 ? t ? 2?
A. 
B. 
C. 
D. 
Solve the system by the addition method.2x2 - 2y2 = 422x2 + 3y2 = 62
A. {(5, -2), (5, 2)} B. {(5, 2), (-5, 2), (5, -2), (-5, -2)} C. {(-5, -2), (-2, -5)} D. {(5, 2), (2, 5), (-5, -2), (-2, -5)}