I need help with this 2 questions can someone help me pls I need it

8. center: (-7,5)

radius: 9

Step-by-step explanation:

8. to find the center, you need to get the equation in the form of (x-h)^2+(y-k)^2=r^2

you can do this by completing the square:

x^2+y^2+14x-10y-7=0

x^2+14x+49+y^2-10y+25=7+49+25

(x+7)^2+(y-5)^2=81

so, the center is (-7,5) and the radius is 9

if he has no friends he cant give them out to his friends

step-by-step explanation:

no friends = cant give anything out

he sells x mount because thats eqivilqant to the maz and then divided into quarters

step-by-step explanation: