Which point is the focus of y=−12x^2

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x