The answer is B. Your going to subtract 4k^2 from both sides, which it would be 4k^2-5k=0. Then you going to factor k(4K-5)=0, which k=0 and 4K-5=0 and then k =0 and 4/5
It says that they are trying to increase the output by 135 so you have the variable to show how much they have to make to reach there goal of 1450 next week