Solve the problem.Suppose that the amount in grams of a radioactive substance present at time t (in years) is given by A(t) = 790e-0.12t. Find the rate of change of the quantity present at the time when t = 4.
A. -1.6 grams per year
B. -58.7 grams per year
C. 1.6 grams per year
D. 58.7 grams per year
Answer: B
Mathematics
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Solve the problem.A bead is formed from a sphere of radius 3 by drilling through a diameter of the sphere with a drill bit of radius 1. Find the volume of the bead.
A. 
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B. 18?
C. 36?
D. 
?
Mathematics
Solve the problem.Numbers is a game where you bet $1.00 on any three-digit number from 000 to 999. If your number comes up, you get $600.00. Find the expected winnings.
A. -$1.00 B. -$0.50 C. -$0.42 D. -$0.40
Mathematics
Answer the question.Inscribe a circle into a rhombus.
What will be an ideal response?
Mathematics
Find the derivative of the function.
?
What will be an ideal response?
Mathematics