Debby used to live 11 kilometers away from the school, but after she moved she now lives 9.68 kilometers away. She is percent closer to the school.

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.

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