We have been given that a hummingbird can beat its wings 4,200 times in a minute. We need to find the equation that represents the number of times the hummingbird beats its wings in an hour.
We know that there are 60 minutes in an hour.
Hence, in an hour, the hummingbird can beat [tex]60\times 4200[/tex] times its wings.
Therefore, the required equation is given by
[tex]b=60\times 4200 \\ \text{When solving the equation, we get}\\ b=252000[/tex]