He used 12 gallons of white paint.
Because 20 divided by 5 = 4. Meaning that 4 gallons is one part.
4 x 5 = 20
4 x 3 = 12
1)
x+y≥20
they need atleast 20 tickets to give away
<h2>
Rules of Exponents</h2>
There are many rules that apply to operations involving exponents. In this question, we'll need the following:
<h3>
The division rule</h3>
- ⇒

<h2>Solving the Question</h2>
We're given:
(solve for k.)
⇒ Rewrite as a fraction:

⇒ Use the division rule:

Therefore, the value of <em>k</em> is 14.
<h2>Answer</h2>
<em>k</em> = 14
The mistake is that they subtracted 21 instead of adding it. you would have had to added 21 to the left side to cancel it out and added 21 to the right side to get p= 55