What is the sum of n natural numbers: 1+2++n?

pls sqdancefan! i have no idea and i really need ! thx so much

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

Change negative exponents to positive. then solve. round to four decimal places