Solve.There are currently 54 million cars in a certain country, decreasing by 0.9% annually. How many years will it take for this country to have 44 million cars? Round to the nearest year.
A. 256 yr
B. 23 yr
C. 5 yr
D. 11 yr
Answer: B
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Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from the horizontal, and that the projectile is launched from the origin over a horizontal surfaceA baseball is hit when it is 2.2 ft above the ground. It leaves the bat with an initial velocity of 
at a launch angle of 22°. At the instant the ball is hit, an instantaneous gust of wind blows against the ball, adding a component of -12.8i (ft/sec) to the ball's initial velocity. Find a vector equation for the path of the baseball.
A. r = (152 sin 22° - 12.8)ti + (2.2 + (152 cos 22°)t - 16t2)j B. r = (152 cos 22° - 12.8)ti + (2.2 + (152 sin 22°)t - 16t2)j C. r = ((152 cos 22°)t - 12.8)i + (2.2 + (152 sin 22°)t - 16t2)j D. r = (152 cos 22° - 12.8)ti + (2.2 + (152 sin 22°)t + 16t2j
Identify the coefficient, variable(s), and degree.-8y13
A. 13, y, -8 B. 8, y, 13 C. -8, y, 13 D. 13, y, 8
Find the intervals on which the function is continuous.y = 
- 
A. discontinuous only when x = -8 or x = -4 B. discontinuous only when x = -12 C. discontinuous only when x = -4 D. continuous everywhere
Solve the problem.Tom Quig traveled 260 miles east of St. Louis. For most of the trip he averaged 60 mph, but for one period of time he was slowed to 10 mph due to a major accident. If the total time of travel was 6 hours, how many miles did he drive at the reduced speed?
A. 15 miles B. 30 miles C. 20 miles D. 40 miles