What is the probability that the wine cooler would be less than 45 degrees

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Which statement about the graph of y = 8(0.25)^2

What is the y intercept of f(x)=(1/2)^x?