Answer:
Late fees have been said to encourage returns, thus putting library materials back into circulation for others to use
Step-by-step explanation:
The answer is a because it has a negative slope and to find it i did rise over run it rises one block for every four it goes over
20% off means you paid only 80% of the original price.
0.8x=40
x=40÷0.8=50
so the original price is 50
