Find the vertex for the equation : y=3x²+18x+30
a.) (-3,3)
b.) (-3,-51)
c.) (3,111)

Dy/dx=6x+18, dy/dx=0 when x=-3

y(-3)=27-54+30=3

(-3, 3)

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?