Please help with this maths on math watch! It’s roots and surds i think this includes rationalising the denominator but i have absolutely no idea which is why i need help!!

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

How to use order of operation in 20 divide by 4 multiply 5 = 1

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?