Let me ask my brother he's smart
Answer:
-9.85
Step-by-step explanation:
-15.5 - 4.2 = -19.7
Negatives work like positives
19.7 / 2 = 9.85
Turn that into a negative
-9.85
Answer:
For the table on the left the rate of change is 
For the table on the left the rate of change is 
Step-by-step explanation:
The range of change is the slope. The slope can be found with the following formula:

<u>For the table on the left</u>
Choose two points. In this case you can choose (-1,-24), (4,90)
You can say that:

Substituting these values into the formula, you get:

<u>For the table on the right</u>
Choose two points. You can choose (3,-6), (-6,12)
You can identify that:

Substituting these values into the formula, you get:

For this case we have the following polynomial:

We observe that we have a polynomial of two varibles.
Variables: a and b
The degree of the polynomial is given by the highest sum of the exponents of the variables.
We have then for the following term:

The sum of the exponents is:

Therefore, the polynomial is of degree 6.
Answer:
the polynomial is of degree 6.