Viktor has $250 in his bano account. he withdraws $15 per week. let x represent the number of weeks that he makes withdrawals and let y represent the amount in his account

The answer is y=$250-$15x. 

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)