Which equation below represents a proportional relationship a) ax+by=c b) y=mx+b c) y=10 d) y=kx

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48

Extra points! find the missing dimension! need asap

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?