I haven't used maple for a while and this could be a totally crazy question to ask. I was wondering if it is possible to plot a function of a function?

I have a function where the only variable in it is a function itself however I don't have an expression for this inner function but I do have restrictions.

e.g if I had something like

+

where a and b are constants and c is a function of t. Is it possible to produce a graph of x verses t?