What is the size of angle x ?

Answer these questions showing your work plz

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 of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?