Step-by-step explanation:
at x = 1 all the graphs go through a grid point with whole coordinate numbers.
so, we need to see what are the values of these functions at x = 1, and we know which function is which graph.
M(1) = 200 × (1/4)¹ = 200/4 = 50
D = M(x)
N(1) = 200 × (1/2)¹ = 200/2 = 100
C = N(x)
P(1) = 200 × (3/4)¹ = 3×200/4 = 3×50 = 150
B = P(x)
Q(1) = 200 × (7/8)¹ = 7×200/8 = 7×25 = 175
A = Q(x)
