Please help me with this question. (100 points)

8 pounds

Step-by-step explanation:

Ratio of C:N = 30:1C - carbon content, N - nitrogen contentGivenCoffee grounds = 1 pound contains 25% C and 1% NRotten vegetables = 6 pounds  contains 10% C and 1% NDry leaves = ?  pound  contains  30% C and 0.5% NSolution

Coffee grounds and Rotten vegetables together give:

1 + 6 = 7 poundsC = 1*0.25 + 6*0.1 = 0.25 + 0.6 = 0.85N = 1*0.01 + 6*0.01 = 0.01 + 0.06 = 0.07

Add dry leaves of x pounds:

Total = 7 + xC = 0.85 + 0.3xN = 0.07 + 0.05x

Finding required weight of dry leaves:

(0.85 + 0.3x)/(0.07+0.005x) = 30/10.85 + 0.3x = 30(0.07 + 0.005x)0.85 + 0.3x = 2.1 + 0.15x0.3x - 0.15x = 2.1 - 0.850.15x = 1. 25x = 1.25/0.15x = 8.33 pounds = 8 pounds rounded to nearest pound

It is the top one. the answer is -7. that is smallest

The answer will be y=-5+0 because the slope is -5 and the it has to go through y-axis 0