This table represents a quadratic function with a vertex at (1,2). what is the average rate of change for the interval from x=5 to x=6 ?

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

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.

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?