Answer:
see screenshot 1.
feel free to copy the graph.
f(0)=-5
notice that anything to the power of zero is one (because its dividing by itself). so we are left with A, -5
f(1)=-10
notice that anything to the power of 1 is just itself, so we multiply-5 by 2 here
A is negative, so the graph will be facing down
the value of B is is greater than 1, meaning the graph will be growing [down].
Part B
see screenshot 2 everything is flipped over the y-axis
Part C
see screenshot 3. remember what "to the power of zero" and "to the power of one" means
hope it helps. greetings from Europe