36 first-year teachers and 12 experienced teachers attended a school staff meeting meeting. What percentage of the teachers in the meeting were first-year teachers?

What is the range of the data below? .8090100

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?