7) Micaela and Stephanie each improved their yards by planting rose bushes and ornamental grass. They
bought their supplies from the same store. Micaela spent $132 on 6 rose bushes and 10 bunches of
ornamental grass. Stephanie spent $90 on 9 rose bushes and 3 bunches of ornamental grass. Find the
cost of one rose bush and the cost of one bunch of ornamental grass.
Explain?