A survey of 222 SPC students was taken at registration. Of those surveyed: 72 students had signed up for a Math course
53 students had signed up for a Language Arts course
19 students had signed up for both a Math and Language Arts course
10 students had signed up for both a Math and Humanities course
9 students had signed up for both a Language Arts and Humanities course
1 students had signed up for all three courses
16 students did not sign up for any of these classes
How many students signed up for only Humanities (of these three)?

1. an economy consists of three workers: larry, moe, and curly. each works 10 hours a day and can produce two services: mowing lawns and washing cars. in an hour, larry can either mow one lawn or wash one car; moe can either mow one lawn or wash two cars; and curly can either mow two lawns or wash one car. a. calculate how much of each service is produced under the following circumstances: a. all three spend all their time mowing lawns. b. all three spend all their time washing cars. c. all three spend half their time on each activity d. larry spends half of his time on each activity, while moe only washes cars and curly only mows lawns b. using your answers to part a, draw a production possibilities frontier and label points a, b, c, and d on your graph. explain why the production possibilities frontier has the shape it does. c. are any of the allocations calculated in part a inefficient? explain.