Can you me solve an infinite geometric sequence

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²