Solve the problem.After t seconds the height s of an object propelled upward with an initial velocity of 3200 feet per second is given by 
How long after the object is propelled upward until it first reaches an altitude of 74,000 feet? (Round your answer to 2 decimal places.)
A. 53.37 seconds
B. 26.69 seconds
C. -20.93 seconds
D. 0.36 seconds
Answer: B
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Write the complex number in rectangular form using exact values if possible. Otherwise, round to one decimal place.-7
A. - 
+ 
i
B. - 
+ 
i
C. 
+ 
i
D. 
+ 
i
Solve the problem.The profit (in millions of dollars) for Allied Manufacturing can be approximated by 
where x is the year 1989 ? x ? 2009. Approximate the average rate of change over a 3-year period. Round your answer to three decimal places when appropriate.
A. -0.675 million dollars B. -6.285 million dollars C. 0.135 million dollars D. -0.885 million dollars
Solve.The daily number of requests, f(x), for a song that a local radio station receives can be modeled by the formula
, where x is the number of days after the song has been released. During which time period will the daily number of requests be below 8?
A. between day 3 and day 4 B. between day 1 and day 4 C. between day 1 and day 3 D. between day 2 and day 6
A condominium complex was purchased by a group of private investors for $1.2 million and sold 5 year(s) later for $3.7 million. Find the annual rate of return (compounded continuously) on their investment. Round your answer to two decimal places. ?
A. 22.73% B. 23.17% C. 22.52% D. 23.84%