Solve for x: -2x - 5 = 4

For how answer my question this will be the last question can you answer in math subject

How do you write y-10=2 (x-8) in standard form

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?