The answer is all four parts
Answer:

Step-by-step explanation:
Given
See attachment for table
Required
Determine the average rate of change over 
Average rate of change is calculated using:

Where

In this case:




From the table:


The expression becomes



9514 1404 393
Answer:
x = 33
Step-by-step explanation:
The angles are complementary.
x° = 90° -57°
x = 33
Answer:
2x - 3
Step-by-step explanation:
The missing side is the value of the perimeter subtract the sum of the 2 given sides, that is
? = 10x + 1 - (5x - 2 + 3x + 6)
= 10x + 1 - (8x + 4) ← distribute parenthesis by - 1
= 10x + 1 - 8x - 4 ← collect like terms
= 2x - 3