Write the inequality of the graph

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

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project