So you would just have to divide 20/7 to get the percentage of it.
The answer would be 2.85%.
The answer would be -72t because all you would have to do is multiply the expression
Recall that the slope is the "average rate of change" of any function.

Answer:
1. Josh's father: f Josh: f/2 - 2
2. f + (f/2 - 2) ≥ 49
3. 3/2 f - 2 ≥ 49
3/2 f ≥ 51
3f ≥ 102
f ≥ 34
4. 34