A manufacturing firm makes a production run of 3,750 pieces. Each piece is 78.30 millimeters long. The cost of material per meter of length is $2.40. Allowing 10% for waste and scrap, what is the material cost for the 3,750 pieces? Round to nearest dollar.

What is 20+(5 x 2/5 )+ 3 show your work

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?