Solve the problem.A sample of 400 g of lead-210 decays to polonium-210 according to the function given by 
where t is time in years. What is the amount of the sample after 100 years (to the nearest g)?
A. 278 g
B. 12 g
C. 16 g
D. 9813 g
Answer: C
Mathematics
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Write the imaginary numbers using the letter i.
A. 5
i
B. 5
C. -5
i
D. -5
Mathematics
Use the formula for the sum of the first n terms of a geometric sequence to solve.Find the sum of the first 9 terms of the geometric sequence: 
, 
, 
, 
, 
, . . . .
A. 
B. 
C. 73
D. 74
Mathematics
Multiply by 1, 2, 3, and so on, to find ten multiples of the number.60
A. 0, 65, 70, 75, 80, 85, 90, 95, 100, 105 B. 60, 120, 180, 240, 300, 360, 420, 480, 540, 600 C. 60, 130, 200, 270, 340, 410, 480, 550, 620, 690 D. 60, 70, 80, 90, 100, 110, 120, 130, 140, 150
Mathematics
Solve the exponential equation. Express the solution set in terms of natural logarithms.?x+1 = e2x
Fill in the blank(s) with the appropriate word(s).
Mathematics