Escribamos el valor posicional del dígito resaltado con otro color en cada número355087671​

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

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

What percent of 18 is 24? and plz explain thx.