Choose the missing step in the given solution to the inequality −x − 3 −4

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

What is the slope of the line that contains the points (-2,1) and (0,-3)

What are the domain and range of the function f(x)=2^x+1