105.

1. $C=0.875w-22,125$

2. Slope: the cost of disposing 1 pound of waste; x-intercept: the amount of waste that can be disposed with no cost; y-intercept: the fixed cost

3. $510,750

4. 1,168,142.86 lb

107.

1. She won $98.

2. She was winning at a rate of $49/h.

3. Yes, after 20 hours

4. $5/hr

109.

1. $0.5\sqrt{0.000004t^4+0.004t^2+5}$

2. 1.13

111.

1. $y=7.4474x-363.88$

2. 

3. 202 lb