Respuesta :
600 texts per month. 5¢ multiplied by 20 (20 texts) equals $1. 20 multiplied by 30 ($30) is 600. How out heels
30 + 0.05t < 60
subtract 30 on both sides.
0.05t < 30
divide 0.05
t < 600
subtract 30 on both sides.
0.05t < 30
divide 0.05
t < 600