Its is 74 because you add all of them then subtract it from the total which in your case is 360
So what you do is
make into ax^2+bx+c=0 form
add-9/2 to both sides
y^2-2y+9/2=0
now we use the quadratice formula which is
x=

ax^2+bx+c=0
1y^2-2y+9/2
a=1
b=-2
c=9/2
subsitute
x=

x=

x=

x=

x=

x=

x=

x=

x=

answer is C
Answer:
45
Step-by-step explanation:
You do 30 divided by 2 = 15. then you do 15+30=45, and boom, there is your answer
37.5
9/24=0.375
Move the decimal two places and you get 37.5%