Eric starts with 10 milligrams of a radioactive substance. The amount of the substance
decreases by } each week for a number of weeks, w. He writes the expression
10(%)" to find the amount of radioactive substance remaining after w weeks.
Andrea starts with 1 milligram of a radioactive substance. The amount of the
substance decreases by 20% each week for a number of weeks, w. She writes the
expression (1
weeks.
0.2)" to find the amount of radioactive substance
remaining after w
Use the drop-down menus
expressions mean.
to explain what each part of Eric's and Andrea's
CLEAF