If the original price is $3.50 and it goes down to $3.20 what percentage did it go down?

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

Which is the scale factor proportion for the enlargement shown?

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before