The cafeteria sold 200 grilled cheese sandwiches, 100 tacos, and 150 grilled chicken salads. what is the ratio in simplest terms of grilled chicken salads sold to the total number of lunches sold?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

How many days was the temperature above 90 degrees?

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits