For all of x, (x+4)(x-5)=?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

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?