A submarine was situated -800 feet below sea level. If it ascends 250 feet for 1 hour, and then descends 175 feet for 30 minutes, what is its new position? (Show All Steps)

On a piece of paper graph y < 3x

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

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