A particular telephone number is used to receive both voice calls and fax message calls. Suppose that 25% of the incoming calls are fax message calls. Among the next 25 calls, find the probability that the number of calls that involve a fax message exceeds the expected number by more than 2 standard deviations.

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

10.4 inches

step-by-step explanation:

2x2x2.6

a.)the line for function b is steeper