Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form.
5, 20, 80, ...

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is