Answer:
C. 1
Step-by-step explanation:
I got this right on my test
it's 9 because 58-49=9
So the answer is 9
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Answer is linear function
It's top left
Answer:

Step-by-step explanation:
If two lines are perpendicular, they create 4 90° angles. Meaning, in this case, that m<DBC = 90 and m<DBA = 90.
We're given that m<DBE = 2x - 1 and that m<CBE = 5x - 42.
The sum of angles DBE and CBE = m<DBC = 90°
We can add the two angles and set it equal to 90 to find x
