The local deli changes a fee for delivery. on monday, they delivered two dozen bagels to an office at a cost of $8. on tuesday,! three dozen bagels were delivered at a total cost of $11. write a system of equations to find the cost of a dozen bagels, b, if the delivery fee is f.

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?