First find how many texts Jennifer's boyfriend sent asking why she wasn't responding: 5 texts * 5 = <<5*5=25>>25 texts
Then add that number to the number of grocery shopping texts: 25 texts + 5 texts = <<25+5=30>>30 texts
Then multiply that number by 10% to find how many texts he sent about calling the police: 30 texts * 10% = <<30*10*.01=3>>3 texts
Then added how many texts of each kind he sent to find the total number of texts he sent: 3 texts + 30 texts = <<3+30=33>>33 texts
#### 33