-1 + 3x< 14 solve the equality

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 is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left