PLZ HELPME PLZ
As elevation increases, temperature decreases. At which elevation will sound travel fastest?

500 meters
1,000 meters
1,500 meters
2,000 meters

Me #1 using vocabulary words, including the word “congruent”, state why the measure of angle d is 120 degrees. #2 what is the measure of angle e and why?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?