6years ago father was 3 times older than his son, and after 6 years he will be 2 times older. how old is father, and how much is his son?

Which of the following vectors are orthogonal to (2,1)? check all that apply

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax

Astrid spent $36 on new shoes. this was $12 less than twice what she spent on a new skirt. part a: which equation would solve for how much she spent on the skirt? part b: solve the equation in the workspace provided below. how much did astrid spend on her skirt?