Answer:
The standard form is 5.61 x 10^2
Explanation:
The standard form for a scientific notation is expressed as A * 10^n
A is any value between 1 and 10
n is an integer
Given the notation 5.61 x 10^2, this is already in scientific notation since;
A = 5.61 which is between 1 and 10 and n = 2 which is a positive integer