Which of the following equations could represent the amount of water (y) in an open tank that is left out in the sun to slowly evaporate for several days (x)? y=-0.21x+10 y=0.42x+8 y=-0.21x-10 y=2x+5 y=3x-2

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?