1. (16 points) Using the data displayed on the next page, display the results of the following relational algebra expressions. Let unary operations have higher precedence than binary ones. Remember, a relation should not contain duplicate rows. 1.1 IIproductId, hours (Ohours > 100 (permissions)) type G count(userid)(users) 1.2 system G sum(cost), min(name), avg(rating), count(rating), count-distinct(rating)(products) 1.3 productId(Ohours