Simplify the rational expression: x+1/x² +7x+6

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .

Find the percent error of the measurement 4 cm

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)