What is 7/500 as a equivalent percent

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)