Please Classify ∠1 and ∠2 using all names that apply

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

In what form is the following linear equation written y=9x+2

What is sin 7x/4 ? i need on this urgent trig