PLS help find the range median MAD and IQR of this data set below (DONT DO THE QUESTION ON THE SCREENSHOT!)

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.

Suppose your sat score is 2040. a college with an average sat score for admintted students of which of these would most likely be your best option?

What is the value of 13x^-3y^-1 when x=-1 and y=4