If z is the midpoint of what are x, rz, and rt?

8x - 10 150

a. x = 18, rz = 134, and rt = 268
b. x = 22, rz = 150, and rt = 300
c. x = 20, rz = 150, and rt = 300
d. x = 20, rz = 300, and rt = 150

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