Find A if 30% of A equals 30% of 30 plus 30​

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

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