Pencils come in cartons of 24 boxes. a school bought 50 cartons of pencils for the start school. each box of pencils cost 2 dollars. how much did the school spend on pencils?

Answer this question only if you know the 30 points and

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?