25 tens equal how much ? also what does 63 tens equal?

Maurice has 54 fewer comic books than rebecca.they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.

Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation