Answer:
36
Step-by-step explanation:
You can use algebra to solve this. To do this write an algebraic equation with the variable x. Since there are 4 unknowns the equation should be 4x+11=155. Then, because the is x number of freshman, solve this equation for x.
First, subtract 11 from both sides
4x=144
Then, divide both sides by 4
x=36
