What table could represent a linear function??? plz help

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 linear inequality is represented by the graph?

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer