Use the information to provide to write the vertex for each parabola part 3
1. x = y^2 + 2y - 3

2. y = x^2 + 18x + 76

3. y = x^2 + 16x + 64

4. x = y^2 + 20y + 90

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?