Answer
$4.542 \times 10^2$
Work Step by Step
RECALL:
The scientific notation of a number is given as:
$a \times 10^n$
Where
$1 \le a \lt 10$, and $n$ is an integer.
To convert the given number into scientific notation, perform the following steps:
(1) Move the decimal point two places to the left to obtain $4.542$.
(2) Multiply $10^2$ by $4.542$ so that the value of the original number is retained:
$=4.542 \times 10^2$