Evaluate: 2 x 30 - 24 divid 3 A.4 B.8 C.12 D.52 please help it would mean a lot <3

Ithink the answer is a

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?