I know it's D because they were losing money for 9 days and $11 in one day, so 9*11 is 99, and since they were losing that means it have to be negative, so the the integer that represents the total decrease is $99 (negative).
the answer is d. 12 cuz a cube is the same length in each side so the width is 6 and so is the length so 6×6 =36 so that's the area of the square and 6 ×12=72 divided by 2 (since it's a triangle) is 36 so the value of x is 12