4tomatoes cost $3.40. what is the unit rate

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

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Is it true or false i’m trying to pass this test so i can leave school