HELP PLS!! I need help for question 10, answers a, b, and c! (Everything is in the picture)

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

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)

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items