Ronnie pays $.08 to make a copy. She decides to buy a copy machine for $250. How many copies does she need to make to equal the cost of her purchase?

What is the value of x in the diagram below?

Find the quotient. 50a2 – 98b2 -5a +7b

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