Which relation is a function?

Answer the following for 896.31 cm= km 100cm = 1m 1000m = 1km a) 0.0089631 b) 0.0089631 c) 8.9631 d) 89.631

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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