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