Four, two-person tennis teams played tennis matches. ivan collected the number of points won by both players on each team and
arranged the information into matrices as shown.
team 4
player a: a-
team 1
38
team 2 team 3
42 21
team 1 team 2 team 3 team
player b: b- 22
42 40
consider the total number of points played by each tennis team. how many teams won 60 points or less?

Perry angelo is planning to open a restaurant. he has the resources to produce and sell either hamburgers or pizzas. so he does some research and finds that the new location has a good demand for pizza. he hires cooks, wait staff, and an accounts person for his new pizzeria. he also arranges for materials such as pizza ingredients and pizza boxes. determine three factors affecting perry's cost of making pizza. write down the name of the factors and their instances in this scenario.