The answer is B) 20
Because you have 5 brands and you combine each with the 4 others, so 5*4=20
0,0 1,3 2,4 3,8 4,5 5,5 6,2 7,0 hope that helps
You get discontinuity when in this function you divide by 0. You will divide by 0 if x+4 = 0. That means that x = -4
y value for this example doesn't matter because for x = -4 you will have discontinuity. Since the only answer that has -4 as x value is D, that has to be solution.
Answer is D
