Expand.
5
A. m5 + 25m2 + 250m + 
+ 
+ 
B. m5 + 25m3 + 250m + 
+ 
+ 
C. m5 + 25m3 + 250m + 
+ 
+ 
D. m5 + 25m3 + 250m2 + 
+ 
+ 
Answer: C
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Solve the problem.Suppose that the amount in grams of a radioactive substance present at time t (in years) is given by A(t) = 670e-0.81t. Find the rate of change of the quantity present at the time when 
A. 5 grams per year B. -5 grams per year C. -107.4 grams per year D. 107.4 grams per year
Multiply.8.857 × 10
A. 885.7 B. 0.8857 C. 88.57 D. 8.8570
The concentration of a drug in an organ at any time t (in seconds) is given by 
where 
is measured in grams/cubic centimeter
src="https://sciemce.com/media/3/ppg__cognero__5.2_Logarithmic_Functions__media__129e9bd3-5f7e-4095-814f-e67c7afe71f0.PNG" style="vertical-align:middle;" />. How long would it take for the concentration of the drug in the organ to reach 0.19
?
?
Please round the answer to two decimal places.
?
A. 
sec
B. 
sec
C. 
sec
D. 
sec
E. 
sec
Solve the problem.The velocity v of a meteorite approaching the earth is given by 
kilometers per second, where d is the meteorite's distance from the center of the earth and k is a constant. What is the velocity of a meteorite that is 2000 kilometers away from the center of the earth, if 
Give your answer as a simplified radical.
A. 
kilometers per second
B. 
kilometers per second
C. 
kilometers per second
D. 3000
kilometers per second