You would then move the decimal how many places you were given
D) y=-2x^2-x is quadratic, when graphed it will create a parabola.
The correct answer is D because -30 is far away from 0
40 - 3k + 10k = -10 - 8k - 10
40 + 7k = -10 - 8k - 10
40 + 7k = -8k - 20
40 + 7k - 40 = -8k - 20 - 40
7k = -8k - 60
7k + 8k = -8k - 60 + 8k
15k = -60
15k/15 = -60/15
k = -4
Well, what you can do is divide both of them by $1544.40, and then figure out how many their were that day