Answer:
x=2.4650
Step-by-step explanation:
I assume that you mean 
so let s use the ln() function

so x = ln(15)/ln(3)
x = 2.4650
900=(1/2)*b*10*15
1800=150b
b=12
I hope you can figure out FC with this info.
Ik but learn its simple but there is multiple answers
5. The blue one is y >= 5x - 7
and green is y >= -0.65x + 3
6. y <= (4/5)x
y >= -(5/4)x
Answer:
im pretty sure the answer is c