Write an equation of each line that passes through the given points (0, -6) , (3, 9)

1) Y=3x-6
2) Y=-6x+3
3) Y=5x-6
4) Y=-6x+5

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%.

This is so hard and it’s for a test

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .