Factor a number, variable or expression out of the polynomial below

x(4x-5)+9(4x-5)

a) 9x(4x+5)
b)(x+9)(4x-5)
c)9x(4x-5)
d)(x+9)(4x+5)

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