Customer account "numbers" for a certain company consist of 3 letters followed by 3 numbers.
Step 1 of 2: How many different account numbers are possible if repetitions of letters and digits are allowed?
Step 2 of 2: How many different account numbers are possible if repetitions of letters and digits are not allowed?

Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x′y′z′, with vertices x′(4, -2), y′(4, -3), and z′(1, -4). the type of transformation that triangle xyz undergoes is a . triangle x′y′z′ then undergoes a transformation to form triangle x′y′z′, with vertices x″(4, 2), y″(4, 3), and z″(1, 4). the type of transformation that triangle x′y′z′ undergoes is a .