I'LL MARKKK BRAINLIEST

A. f(x) = 2(0.5)^x.

Step-by-step explanation:

When x = 0,  f(x) = 2

so it is either 2(0.5)^x or 2(0.25)^x

We see from the graph that when x = 1, f(x) = 1.

So it must be A because 2(0.5)^1 = 2*0.5 = 1.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.

d is the only accurate one

step-by-step explanation: