Here is a graph. When you use a graphing calculator, it isn't always necessary to solve for y.
Note different colors are used for the different problems. Problem 2 has a dashed line, as described by "Remember, ...".
Simple,
writing out the problem...

Simplify it...
-4x(6+5-1)
-4x(11-1)
-4x(10)
-40x
Making it look like...

Cancel out the common factors...
Thus making the answer:

.
Answer:
its d
Step-by-step explanation:
used photo math
Answer:
it's part of the real number system
it's a rational number
it's an integer
Step-by-step explanation:
On Monday, 11 lunches and 10 desserts are ordered. On Friday, 10 lunches and 10 desserts are ordered.