hours/week Grade х у 58.6 4 5 12 12 12 13 14 14 19 19 59 84.8 73.8 66.8 78.2 87.6 89.6 100 91.6 State the regression equation y = mx + b, with constants accurate to two decimal places.

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

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