Choose yes or no to tell whether the equation has the given solution.

Many colleges review students’ scores on the _ or _ before deciding whether to offer them admission.

Summarize the work of famous environmental scientists of the past.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?