Solve the following equations cosx(cosx+1)=0

Renita analyzed two dot plots showing the snowfall during the winter months for city a and for city b. she found that the median snowfall is 5 inches less in city a than in city b. the mean snowfall is about 2 inches less in city a than in city b. which explains why there is a difference in the measures of center for the sets of data?

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2