Find the equation in standard form of the parabola passing through the given points (0,-1),(1,5),(-1,-5)

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1