Lily took 57 seconds to walk from classroom to library. If the distance between the classroom and library was 38 m, at what
average speed did Lily walk in m/min?
m/min

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.