Can you guys figure this out for me?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

The graph shows the distance kerri drives on a trip. what is kerri's speed?

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru