Respuesta :

Dear Gisell1, the cost for 7 teachers to attend is $26.
Lynxie
It would cost $26 for seven teachers to attend the technology conference. 

Steps I Took to Find the Answer: 

1. 
Replace n for 7 
    3n + 5 ------> 3 × 7+ 5

2. Then simplify 
     a. 21 + 5 = ?
     
3. Solve. 
    21 + 5 = 26 

Hope I helped! <3