Which formula gives the area of rectangle efhg? (and explain! )
a.) area = d × j
b.) area = (e + h) × (f + i)
c.) area = (e + h) × j
d.) area = (e + h) × (f + c)

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