Solution:
we have been asked to find the product of (x+y+3)(x+y-4).
we will multiply term by term as below

Hence the the product of (x+y+3)(x+y-4) is 
Answer is: "A"
Formula used:
V = 4/3πr^3
we already know r so
V = 4/3(π)13^3
Answer:52,425
Step-by-step explanation: If you add all of the positive assets you end up with 15,050 but if you add 71,975 you get exactly 87,025 but when you add the liabilities you get -19,550 when you add those two numbers you get 52,425
Hope this helps!
Step 1. Take out the constants
(4 * 7)xx^2
Step 2. Simplify 4 * 7 to 28
28xx^2
Step 3. Use the Product Rule
28x^1 + 2
Step 4. Simplify 1 + 2 to 3
28x^3