Plz ! 25 points for brainliest !
an arrangement of billiard balls has 5 balls in the first row and 16 rows in all. in each successive row one ball is added.
what is the explicit rule for this situation, and how many balls will be in the 16th row?
drag and drop the answers into the boxes to match the situation.
picture is
edit: for you poor souls in the future trying desperately to find the answer, as am i, here you go:
explicit rule: an=5 + n
number of balls in the 16th row: 20
good luck my fellow gamers.

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.