no matching function for call to ‘to_string(const std::__cxx11::basic_string&)’ return to_string(t);

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health? a. air quality data gathered by new instruments can be used to reduce exposure to pollutants. b. new technologies enable natural and human-made pollution sources to be located and monitored. c. air quality data gathered by new instruments can be used to predict trends in pollution over time. d. new technologies allow governments to make informed decisions about the regulation of pollution. (choose more than one)

Whats three fourths of 15(this is supposed to be in math but i clicked too fast)

Learning sign language is an example of a(n) learning sign language is an example of a(n)