Answer:
<em>Briana's thinking is incorrect because the numbers are different when you substitute x with numbers other than 0.</em>
the two equations that are equivalent to each other are,
<u><em>5x+x−4 and 9x-3x-4</em></u>
Step-by-step explanation:
Expression A: 9x−3x−4
Expression B: 12x−4
Expression C: 5x+x−4
First I will substitute x for each of the equations.
9x-3x-4
when x equals: , then y equals:
1 = 9(1)-3(1)-4= 2
2 = 9(2)-3(2)-4=8
3 = 9(3)-3(3)-4= 14
Now for 12x-4
when x equals: , then y equals:
1 = 12(1)-4= 8
2 = 12(2)-4= 20
3 = 12(3)-4= 32
And for the final equation:
5x+x−4
when x equals: , then y equals:
1 = 5(1)+(1)−4= 2
2 = 5(2)+(2)−4 = 8
3 = 5(3)+(3)−4=14
Based on this you can now see that the two equations that are equal are:
<u><em>5x+x−4 and 9x-3x-4</em></u>
<em>~CaityConcerto</em>
1st, 3rd,4th, and 5th should all be right
Since the stock went up by 30% and fell by 30%, the net increase is 0%. So x = 0.
Answer:
x = (c + 6b)/3
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
-b + 3x = c + 5b
<u>Step 2: Solve for </u><em><u>x</u></em>
- Add <em>b</em> to both sides: 3x = c + 6b
- Divide 3 on both sides: x = (c + 6b)/3
