A bag contains 15 marbles . The probabilty of randomly selecting a green marble is 1/5

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

Which one ? is the answer and how to find this answer

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?