what is the slope-intercept equation of this line?

What are “like terms”? why can we only add like terms?

Ifurniture stores having a weekend sale and is offering 20% discount on patio chairs and table the sales tax on furniture is 6.25 using function composition how can you represent the total amount a that you would need to pay for this furniture that cost x dollars

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?