Researchers collect data from a storm as it grows in strength and becomes a hurricane.
By analyzing the data, researchers discover that they can model the speed of the wind
from the storm with the equation y=x+21. In this equation, x represents the number
of hours that researchers have been monitoring the storm, and y represents the maximum
wind speed (in miles per hour) in the storm. What is the maximum wind speed of the storm after 36 hours of monitoring?