If a coin is flipped three times in a row, what is the probability of getting tails on all three flips?

Probability of getting tails on first flip = 1/2

Probability of getting tails on second flip = 1/2

Probability of getting tails on third flip = 1/2

Probability of getting all 3 tails =  1/2 * 1/2 * 1/2 = 1/8

C. expression because any expression or equation may contain more than one variable