An element with mass 140 grams decays by 21.6% per minute. how much of the element is remaining after 20 minutes, to the nearest 10th of a gram?

The mass of the remaining element = 1.1 grams .

Step-by-step explanation:

Exponential equation of decay :  ... (i), where A = initial value , r= rate of decay in decimal , x= time.

As per given : Initial mass : A= 140 grams

Rate of decay : r= 21.6% per minute= 0.216 per minute.

x= 20  minutes

Substitute values in (i) , we get

Hence, the mass of the remaining element = 1.1 grams .

domain is all the x values included in the

0 ≤ x ≤ 2

range is all the y values of the graph

-2 ≤ y ≤ 2

***keep in mind that there are different ways to show domain and range

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answer: sorry i can't you.

step-by-step explanation: