You can set up this equation as:

Because remember, 70% is equal to 0.7 and x represents the unknown value. So, let's just solve it:

So,
70% of 120 is 84.
Slope of (6, 9) & (7, 1)
To find the slope, we use the equation : m = y₂-y₁ / x₂-x₁
**Remember : m = slope**
Let's say that (6, 9) is our first set of points, and (7, 1) is our second.
If those are our first and second points, then we now know this :
x₁ = 6, x₂ = 7, y₁ = 9, y₂ = 1
Now that we know that, we can simply plug those points into our slope equation.
m = y₂ - y₁ / x₂ - x₁
m = (1 - 9) / (7 - 6 )
Simplify.
m = -8 / 1
Simplify.
m = -8
So, our slope is -8.
~Hope I helped!~
First, you will start with distributive property. on the right side you will distribute 4 into x and 3.
the equation will become:
2x + 22 = 4x + 12
then you have to get x on only one side of the equal sign. subtract 2x from 4x and the equation becomes:
22 = 2x + 12
subtract 12 from 22:
10 = 2x
divide 10 by 2:
5 = x
or
x = 5
(:
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It would be D! feel free to mark me brainlist!