If a=7 and b=2, find the value of

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class