216^−1.5t + 15 = 1 will give brainiest

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

Which table represents a linear function? i'll give brainliest to first answer ^'^

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?