Solve the problem.The temperature at the South pole was -45° at 8 am. At 3 pm, it was 12°. By how many degrees did the temperature rise?
A. by -57°
B. by 33°
C. by -33°
D. by 57°
Answer: D
Mathematics
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Find the derivative of the function.q = cos 
A. 
= - 
sin 
B. 
= - sin 
C. 
= - sin 
D. 
= - 
sin 
Mathematics
log3 81 = 4
A. 43 = 81 B. 814 = 3 C. 381 = 4 D. 34 = 81
Mathematics
Solve the problem.How long will it take for $6300 to grow to $8100 at an interest rate of 3% if the interest is compounded quarterly? Round the number of years to the nearest hundredth.
A. 43.02 yr B. 8.50 yr C. 8.41 yr D. 33.63 yr
Mathematics
Express the product as a sum containing only sines or cosines.cos(5?) cos(4?)
A. 
[cos(9?) - cos ?]
B. 
[ cos ? + cos(9?)]
C. 
[cos(9?) - sin ?]
D. cos2(20?2)
Mathematics