Solve.If a rocket is propelled upward from ground level at 98 m/sec, its height in meters after t seconds is given by 
During what interval of time will the rocket be higher than 445.9 m?
A. (7, 13)
B. (8, 12)
C. (6, 13)
D. (7, 12)
Answer: A
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Solve the problem.An electric circuit contains an inductor, a resistor, and a voltage source of 
The resulting differential equation relating the current i and the time t is 
Find i after 0.8 seconds by Euler's method with ?t = 0.2 s if the initial current is zero.
A. 0.18 A B. 0.17 A C. 0.15 A D. 0.20 A
Solve.The highest point in the United States is Mount McKinley at 20,320 feet. The lowest point is Death Valley, California, at 282 feet below sea level. What is the difference between these two points?
Fill in the blank(s) with the appropriate word(s).
Solve the problems.On Anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. If her rear wheel turns 679 times per mile, how many times does she turn the pedal in one mile?
A. 683 times B. 388 times C. 1,188.3 times D. 686 times
Find all values of ?, if ? is in the interval [0, 360°) and has the given function value.cos ? = - 
A. 60° and 300° B. 150° and 210° C. 210° and 330° D. 60° and 120°