Cobalt 60 has an annual decay rate of about 13% how many grams of a 300 g sample will remain after 20 years round to the nearest two decimal places.( quick for a quiz): )

It loses 13% of its mass and is reduced to 100% -13% = 87% every year.

(300 g) * (0.87)^20 = 18.51 grams

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .