What is 6 to the power of negative 2

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

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

Stacey filled her 1/2 cup of measuring cup seven times to have enough flour for a cake recipe how much flour does the cake recipe calls for