= 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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where are the choices?

900 degrees

step-by-step explanation:

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

i hope this you, and have a wonderful day!