If a graph is rising on the left and falling on the right, which function would the graph belong to?
a: f(x) = x3 + 2x + 3
b: f(x) = –x4 + 2x2 + 1
c: f(x) = –x3 + 4x

B. I am sure it's B. I have a A+ in Math. 

Move the decimal behind it

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?