Well it's a dare so I guess I'll do it.
The cost of a single shot is
.78 +.52 +.96 = 2.26
they charge 25 a shot
25 - 2.26 = 22.74
there is a profit of 22.74 per shot
22.74 * 167 =3797.58
They make $3797.58
A. $40, because you would do 1,000 × 1.04 = $1,040, and then subtract the original $1,000.
b. $81.60, because 1,000 × 1.04² = 1,081.6
c. $480.24, because 1,000 × 1.04^10 = 1,480.24.
I have used the formula for compound interest presuming you were aware of it, but I will be happy to explain what I did if you want :).
I hope this helps!
