5-3(x-1)=14 Solve for x

Look at attachment. has all info needed. need

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 point is a solution to y s 4x + 5?