Which expression is equivalent to − 3 ( 2 x + 5 ) − ( x + 7 ) ? A −7x − 22
B −7x + 22
C 7x − 22
D 7 x + 22

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.