What is the equation of the quadratic graph with a focus of (3, 1) and a directrix of y = 5?
the choices are
f(x) = one eighth (x − 3)2 + 3
f(x) = −one eighth (x − 3)2 + 3
f(x) = one eighth (x − 3)2 − 3
f(x) = −one eighth (x − 3)2 − 3

Someone . me. compound probability

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?