The question mark is 100. It is a variable if you don't know
Answer:
(0,0) is among the solutions
Step-by-step explanation:
The given inequality is 
A solution to this inequality is any ordered pair that satisfies the inequality.
Let us check for x=0 and y=0
We substitute to get:

....This is true.
Therefore (0,0) is a solution to the given inequality.
There are infinitely many solutions.
3days=3chapters so he would have to read for 8 days
Answer:
it is in quadratic equation meaning you use Plus or minus