The answer is 8 because you add 8 and 10 and then multiply it by 10 then you get will 180 and that is what the equation wants you to get so the answer is x/8
You can simplify the fraction to get 2/5. If you convert this into a decimal you will get 0.4, so D is your answer.
If 16 friends share 4 cupcakes, and each friend gets 4 pieces, you would need to cut each cupcake in 16th's to result in 64 pieces; 64/4 = 16
I got imaginary means complex numbers
So answer is d