What the distance between (1, -5), (7, 4)

How do i multiply two digit numbers

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

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?