X+y=24 so we can say
x=24-y making 3x+5y=100 become
3(24-y)+5y=100
72-3y+5y=100
72+2y=100
2y=28
y=14, since x=24-y
x=10
So there are 10 3-point questions and 14 5-point questions.
Y = 12x is a direct variation which is a proportion.
As x increases y also increases.
Answer:
volume = 504
Step-by-step explanation:
the basic formula for volume is length × width
14 x 3 x 3 x 2 x 2 = 504
