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

1. The number of hot dogs needed for a picnic is two for each students.
   
   
   
2. The cost of a taxi ride is $2.00 plus $1.10 per mile.
   
   
3. 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