Please help me with this homework

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1