What is the second term of the sequence defined by the recursive rule f(1) = 3, f(n) = f(n-1)+5?

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.

The least common multiple is the multiple, other than 0, common to sets of multiples.

You draw a card at random from a deck that contains 33 black cards and 77 red cards.