Let , and r be the propositions: : Restaurant employees are underpaid. : Department store cashiers are underpaid. : Some people are underpaid. Write the following propositions Using , and r and logical connectives. a. If it is not the case that restaurant employees are underpaid and department store cashiers are underpaid then some people are not underpaid. b. Restaurant employees are underpaid, but department store cashiers are underpaid only if some people are underpaid