Here is our inequality.

Let's go from least to greatest, and add in infinity as our maximum.

Our interval notation would look like this.

We put the lower bound, then the higher bound, using brackets instead of parentheses if x can also be equal to that value.
Negative 34. Integers can be positive or negative, but never have decimals. Having a decimal means it is a rational number. Negative 0.4, 0.4, and 3.4 are all rational numbers because they have a decimal meaning they cannot be integers
1 - ten million place
2 - one million place
3 - hundred thousands place
5 - ten thousands place
4 - one thousands place
8 - hundreds place
9 - tens place
7 - ones place
HOPE THIS HELPS!!!!
F(x) = -5x^2 - x + 20;
f(3) = -5*3^2 - 3 + 20 = -5*9 - 3 + 20 = -45 - 3 + 20 = -28;