Hi I'm new to R so I apologise if this is a very basic question.
I'm trying to add text to a plot at point 11 on the x axis and point 900 on the y axis that will read `t0= -4.0280` with the 0 as subscript. Where `t0 <- -4.0280`
 To do this I've tried:

```
text(11,900,paste("t[0]=",t0),cex=0.8) 
# which gives 
't[0]= -4.0280'

text(11,900,expression(paste("t[0]=",t0)),cex=0.8) 
# which gives 
't[0]=t0'

# the closest I've gotten is:    
text(11,900,expression(paste(t[0]==t0)),cex=0.8)

```

which will use subscript but return `t0` instead of my value of -4.0280.

Could anyone show me where Ive gone wrong?

Cheers.