Sorry this problem is incomplete, there is no question. But I’m going to assume the question is: how many students said pre algebra was their favorite course?
So all we have to do is take the total number of students surveyed and multiply that by the percentage of students that said pre algebra, but in decimal form.
So 150 multiplied by 0.30. That gives you 45.
45 students out of the 150 students responded pre algebra was their favorite course in high school.
Let me know if I guessed the question right! That would be awesome!