= An initial sample of 502 g of a radioactive substance decays according to the function Alt)
where t is given in years.
502e -0.033t
(a) How many grams of the substance will remain after 68 years? Round your answer to one decimal place.
(b) What is the half-life of the substance? Round your answer to one decimal place.
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just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.