Three of Carlos' and Claritas' friends are purchasing school
supplies at the bookstore. Stan buys a notebook, three
packages of pencils and two markers for $7.50. Jan buys two
notebooks, six packages of pencils, and five markers for
$15.50. Fran buys a notebook, two packages of pencils and
two
markers for $6.25.
a. Write the system of inequalities (Define x, y, and z)
b. Determine the cost of each item
