Samira ran around a park loop that was one-third mile long. she ran around the loop nine times. samira says she ran 9/3 miles. her brother amal says she ran 3 miles. who is correct?

Can someone me and do the problem plz so i can understand it more better

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.