A radioactive substance decays according to A=A0e−0.005t, where A0 is the initial amount and t is the time in years. If A0=490 grams, find the time for the radioactive substance to decay to 224 grams. Round your answer to two decimal places, if necessary.

$450.00 for 6 weeks

or

$300

step-by-step explanation:

$200.00 for first week $50.00 x5 equals $250 plus $200 equals $450.00 for six weeks.

$200 for first week

$200 x 0.10 = $20

$20 x 5 = $100

$200 + $100 = $300

explanation:

step-by-step explanation:

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