Answer:
French=60,History=120,Music=108
Step-by-step explanation:
I think this is trying to represent the degrees of a pie chart.
To find the degree of the pi chart per person you need to 72/12=6
Than to find the amount of degrees per subject multiply 6*amount of students.
Example:

I’m pretty sure it looks like it’s D
Answer:
5
Step-by-step explanation:
b^2= (5)^2 = 25
So.... b=5 or -5