a mountain gorilla weighs 135 pounds and is gaining 1/2 pounds each week an eastern gorilla weigh 145 pounds and is loosing 1/4 pounds each week which of the following equation could be use to determine x, the number of weeks that it will take until the two gorilla weigh the same amount?
A. 135 + 1/2x = 143 + 1/4x
B. 135 + 1/2x = 143 - 1/4x
C. 135x +1/2 = 143x + 1/4
D. 135 + 1/2x = 143 + 1/4x