Answer:
Box e
Step-by-step explanation:
14/20=0.7
It has a ratio of 1:4, meaning for every x, you'd get 4 from your y
Answer:
The vertex is: 
Step-by-step explanation:
First solve the equation for the variable y

Add 4y on both sides of the equation


Notice that now the equation has the general form of a parabola

In this case

Add
and subtract
on the right side of the equation


Factor the expression that is inside the parentheses

Divide both sides of the equality between 4


For an equation of the form

the vertex is: (h, k)
In this case

the vertex is: 
Answer:
x = -9
Step-by-step explanation:
the equation is 2^4x = 8^x - 3.
therefore 2^4x = 2^3(x-3)
since both have powers of 2
therefore
4x = 3(x-3)
4x = 3x - 9
4x -3x = -9
x = -9
I think the answer would just be 12a because -9a? And +9a? Would cancel out and the -10 and +10 would cancel out so all that is left is the 12a