4(r+3)= i need to simplify this algebraic expression

What are the related frequencies to the nearest hundredth of the columns of the two way table? group 1: a-102 b-34group 2: a-18 b-14edited: i don’t have all day to be waiting for an answer. i figured it out.

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?