12+18=30 so together they have $30.00 in all.
Answer:

Step By Step Explanation:
Subtract 2 From Both Sides

Simplify

Subtract 9x From Both Sides

Simplify

Multiply Both Sides By -1 (Reverse Inequality)

Simplify

Divide Both Sides By 2

Simplify

- Mordancy
Answer: (
x-4)(x+4)
Step-by-step explanation:
x2+4x-4x-16
x2+4x-4x-16
x(x+4)-4(x+4)
(
x-4)(x+4)
Answer:
<h2>

</h2>
Step-by-step explanation:
f(x) = 2x + 4
g(x) = 4x² + 1
In order to find (g ∘ f)(0) we must first find
(g ° f )(x)
To find (g ° f )(x) substitute f(x) into g(x) that's for every x in g(x) replace it with f(x)
That's
<h3>

</h3>
We have
<h3>

</h3>
Now to find (g ∘ f)(0) substitute the value of x that's 0 into (g ∘ f)(0)
We have
<h3>

</h3>
We have the final answer as
<h3>

</h3>
Hope this helps you
E = 75% = 0.75, Work Output = Useful Work = 240 J, Work Input = ?
Efficiency, E = Work Output / Work Input
0.75 = 240 / Work Input
Work Input = 240 / 0.75
Work Input = 320
Amount of work supplied = Work Input = 320 J
I hope this explains it.