A10 % discount was given if a further discount of 10% was given on the reduced price calculate total single discount on the marked price

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?

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

Let x = a + bi and y = c + di and z = f + gi. which statements are true?