a store is having 20% off sale. the sale price of an item with price “p” is p-0.2p. what is the equivalent expression?

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.