Express each rule with an equation. use single letters to stand for the variables. identify what each letter represents.

9. the number of hot dogs needed for a picnic is two for each students.

10. the cost of a taxi ride is $2.00 plus $1.10 per mile.

11. a cellphone family plan costs $49 per month plus $0.5 per text. write an equation for the monthly bill b when t text are sent.
b= cost of monthly bill
1= # of texts sent

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0