Which source of energy is the easiest to convert by an electric generator A. Wind
B fossil fuel
C petroleum
D geothermal

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

(30 points). the population of a city is 45,000 and decreases 2% each year. if the trend continues, what will the population be aer 15 yrs

Round to the nearest ten thousandth.i dont get this