What is the center of the circle described by the equation (x - 2)^2 +(y + 7)^2 =169 A (2, 7)
B (-2, -7)
C (2, -7)
D (-2, 7)

Answer this question only if you know the answer! 30 points and

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.

Aa at 9 a.m. it at 4 p.m. he a of $28.84.?