If adams high and jefferson high both lose 150 students each, madison high's population increases by 100 students, and both
lincoln high and grant high gain 50 students each, what happens to the mean of the population of washington county schools?
a)
the mean increases by 20.
b)
the mean remains the same
the mean decreases by 20.
the mean decreases by 100

Translate the following situation into an inequality statement . lily has $25 to spend on a charm bracelet for her sisters birthday gift the cost of the bracelet is $12 plus $1.50 per charm

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.

Sum of the interior angles of a pentagon