Given the 100 students in the Springdale High School senior class,38 students are taking math,45 students are taking psychology, and 12 students are taking both classes. How many students in the senior class are taking exactly one of the two classes?

Read the corporate document. all employees of cozy clothes ltd. are entitled to a 40 percent discount on regularly priced merchandise and a 20 percent discount on sale-priced merchandise. to apply this discount to an employee purchase, follow this procedure: 1. enter the purchaser’s employee id number into the cash register when prompted. 2. apply the appropriate discount. 3. apply sales tax. 4. print an additional copy of the sales receipt. initial both copies. 5. add the additional copy to the register drawer to be included with the nightly closeout report. what is the purpose of the numbering in this document? to indicate steps in a process to emphasize supporting ideas to signal the text’s main ideas to show the meaning of policies