Solve the problem.The bacteria in a 9-liter container double every 4 minutes. After 58 minutes the container is full. How long did it take to fill a quarter of the container?
A. 50 min
B. 43.5 min
C. 14.5 min
D. 29 min
Answer: A
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You got a birthday gift of $34.94, which you choose to spend on music.You pay $12.50 for an iPad app that lets you download songs for $1.02 each. How many songs can you download before your birthday money is used up? ?
A. 29 songs B. 19 songs C. 22 songs D. 24 songs
Perform the indicated operation. Write the answer in the form a + bi.4(cos 30° + i sin 30°) ? 6(cos 330° + i sin 330°)
A. -12 + 12i
B. 24i
C. 12
+ 12i
D. 24
Perform the indicated operation involving cylindrical coordinates.Find the cylindrical coordinates of the point whose rectangular coordinates are (-1, 1, -4).
A. 
B. 
C. 
D. 
Use the sinking fund formula to determine the payment needed to reach the accumulated amount. Round the answer to the nearest cent.Annual payments with 3.1% interest compounded annually for 9 years.to accumulate $4400
A. $103.63 B. $382.05 C. $431.35 D. $493.05