Divide 3x^2-11x-4 by x-4

What is the number 321,000,000 in scientific notation? also what is the number? ?

Someone me what is the area of this figure? 18m 18m 8m 16m

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236