The price of an item selling at 150% of its $63 value is

3x = 729 solve for x plz . it's urgent. will mark

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.

If a + b = 28 and a - b = 10, then b =?