Someone please help me with this​

In a school 2/3 of the students study a language of those who study a language 2/5 study french

The monetary value earned for selling goods or services to customers is called a.) revenue b.) assets c.) money d.) accounting

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142