Grace starts with 100 milligrams of a radioactive substance. The amount of the substance decreases by 14 each week for a number

Question

3 years ago

15

Grace starts with 100 milligrams of a radioactive substance. The amount of the substance decreases by 14 each week for a number

of weeks, w. She writes the expression 100(14)w to find the amount of radioactive substance remaining after w weeks. Ryan starts with 1 milligram of a radioactive substance. The amount of the substance decreases by 40% each week for a number of weeks, w. He writes the expression (1 – 0.4)w to find the amount of radioactive substance remaining after w weeks. Use the drop-down menus to explain what each part of Grace’s and Ryan’s expressions mean.

Mathematics

2 answers:

UNO [17] · Answer 1 · 2022-04-08T19:34:42+03:00

UNO [17]3 years ago

8 0

Answer:

100= Initial Amount

1/4= decay factor for each week

w= number of weeks

1/4w= decay factor after w weeks

1 - 0.4= decay factor for each week

w= number of weeks

0.4= percent decrease

Step-by-step explanation:

Eva8 [605] · Answer 2 · 2022-04-08T17:58:35+03:00

Eva8 [605]3 years ago

7 0

Answer:

I Believe Grace Is Dead Dreamer?!

Step-by-step explanation: