Ajar contains 0.25 l of apple juice and 0.3 l of grape juice melissa for 0.75 liters of pineapple juice into the jar she then drink 0.20 of the mixture write an expression to represent the total amount of juice left in the jar

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.