Find the solution(s) of the following equation.
x2 = 81

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

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

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?