<h2>
1. Pascal’s triangle</h2>
Pascal's triangle is an strategy in math that stands for a triangular array we use to solve problems of binomial coefficients. This strategy is called after the mathematician Blase Pascal. It consists in number patters. So in this problem we need to solve this following Pascal’s triangle strategy:

The strategy consists in building a triangle. So 1 is the first and last numbers in each row of Pascal’s Triangle. Next, every other number in each row is formed when you add the two numbers directly above the number, as shown in Figure below. So:

<h2>
1. Binomial Expansion</h2>
A binomial is a polynomial having two terms. So binomial expansion is a method that stands for a formula that gives us a quick method of raising a binomial to a power. So, for n=3, the binomial expansion can be written as:

Well, a liter is 3.78541 gallons so multiple that by 20, its 7<span>5.7082 round it, its 76. im not sure what it means by stocks because i dont have the question but hopefully the 76 helps</span>
Pyramid sometimes becomes a parallel because the top part intersects but the bottom lines that are on the bases do NOT intersect but are Parallel.
Answer:
1) 70
2) 102
Step-by-step explanation: