Respuesta :

 3.20 ÷ 4 = .80

SO

1 bulb costs $.80.


14 × .80 = 11.2 or 11.20 (its the same thing)

SO 14 light Bulbs cost $11.2 or $11.20.

Hope I helped ya!!
3.20= 4 light bulbs
3.20/4= .80cent per light bulb
.80*14=$11.20