Simple Q&A D&D 3.5 (by RAW) XXVII

[Flame of Anor]

A 201 additional

Also, the wizard would get bonus spell slots for his Intelligence score. You should look up the table, but it's something like one extra spell slot for every level X such that your intelligence bonus is at least X, and another extra spell slot for every level Y such that your intelligence bonus is at least Y+4, and so on. (But not level zero spells.)