Josh rode his bike for 30 minutes. He kept a record of his biking speed, in miles per hour (mph), for each 5-minute interval. The table
shows the changes in the biking speed for different time intervals.
Consider a graph in the xy-coordinate plane of Josh's biking speeds as a
function of time, in minutes. Assume that the increases and decreases in
the running speed were constant. In which time interval is the graph of the
function increasing? Select all that apply