7
a librarian estimated that the library had 65 books about george
washington and 80 books about abraham lincoln. the library actually has
67 books about washington and 71 books about lincoln,
to the nearest whole percent, what is the percent error of the librarian's
total estimate? write your answer in the box.

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?

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?

Find the equation using the point (4,8)