All!
1) jamal's scores for the first two times he took the sats were 2050, and 2140. what must he score, at minimum, to average 2000 after three test - taking attempts?
2) ke yi's average for her first 3 tests is 88. what must she score on her last test to bring her average up to 90?

At the county fair, animals are judged for the quality of their breeding and health. the animal pens are arranged in an array, with one animal in each pen. a barn can hold at most 10 rows of pens and at most 6 pens in each row, with room for people to walk around them. what different ways can the planners of the county fair arrange the pens for the horses and cows in the same barn?