The problem uses the concept of Combination where there are number of members chosen from a group and there order is not important. Thus, the expression that would best describe the given above is 30C6 which means the combination of 30 taken 6. The numerical value for this is 593775.
X= 3r+5/2 is the answer I believe
Since the graph is moving positive from left to right, x is positive. so now we are left with B) and C) for our answer
now, the y intercept or b is -3 as shown in the graph
the answer is C) y= x -3
