Solve this question. Will give brainliest!

The slope of a line is -1/2 . what is the slope of a line that is parallel to it? a. 1/2 b.2 c. -1/2 d. -2

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document