To answer this item, note that what needs to be done is to substitute -4 to all x's in the equation. That is,
F(x) = 2^x
will become,
F(-4) = 2^(-4) = 1/16 or 0.0625
12 divided by 3 is 4. the answer would be 40 as 4x10 is equal to 40
I believe you can do 1,245 divided by 65 to find out how many puzzles they can buy I may be wrong :/
