Ignacio and oliver are olaying anothe rha, e woth algebra tiles. after they simplify two men expressiom, they are left wotn tnr expressioms km their mags shiwn atn right. they could mot tell which part of the mad is greater just by looking

3(10x-y)-5(x-y^2) need this solved asap

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Three times the sum of a number and seven is negative thirty-six. what is the number?