Yesterday, Grace drove 2 1/8 miles. she used 1 1/4 gallons of gasoline. What is the unit rate for miles per gallon?

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

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]