Which function have a y-intercept of (0,0)

A. Y= e^x+1
B. Y=-e^x+1
C. Y=e^x-1
D. Y= e^x

Find the difference (8ab+a+2) - (3ab+6)

Math it's appreciated. (picture provided)

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?