If the probability of a defective computer chip is 0.85 and you randomly sample 20 chips, what is the probability that at least 19 computer chips will be
defective?
0.0388
0.1756
0.2345
0.8244

The monthly texting plan of all star cell is $11 per month and $0.25 per text. the monthly texting plan of top line cell is $14 per month and $0.15 per text. a student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. he uses the variables x and y. he lets y represent the total monthly cost. what will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text