Given f(x)=4x^2-9 and g(x)=2x+3 find each value given f(x)=4x^2-9 and g(x)=2x+3 find each value find each value 1. (f+g)(x) 2. (f-g)(x) 3. (fg)(x) 4. f(g(3)) 5. g(f(3))

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?