Can somebody me with this problem

(5/3)^-4 * (5/3)^-5 = (5/3)^(-5-4) = (5/3)^-9

(5/3)^-9 = (5/3)^3x

So -9 = 3x

x = -3 answer

where are the options?

step-by-step explanation:

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!