Ellen drove 357.3 miles for each gallon of gas the car can travel 21 miles select a reasonable estimate for the number of gallons of gas ellen used. pick an answer.1.7 1.8 17 18 170

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.

Which system of linear inequalities is graphed? can somebody pleasssse

Which of the following statement about pascal's triangle are true?