Multiple Choice
A certain radioactive substance is decaying at a rate proportional to the amount present. If 100 grams decays to 13.5 grams in 4 years, how long will it take for 90 grams to decay to 30 grams?
A) 2.405 yr
B) 2.195 yr
C) 0.501 yr
D) Problem cannot be solved as stated.
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q30: Determine the percentage rate of change
Q31: Let g(t) = 100 - 100
Q32: If y = 10(1 -
Q33: If y = 2(1 -
Q34: Suppose that a school of fish
Q36: $1000 is invested at 6% interest compounded
Q37: A bank pays 2.5% interest on deposits.
Q38: How much money has to be invested
Q39: If an investment doubles in 5 years
Q40: Let y = 6(1 -