What is the procedure to find the z value when you have an area shaded between z on the right and 0 under the bell curve

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap