Given:


To find:

Solution:


Substitute
.


Subtract 26° from both sides.


Divide by 2 on both sides, we get

Therefore, m∠1 = 35°.
12x = 12; x = 1
That simple
-7 + 3w = 4w - 8
-7 = 4w - 8 - 3w
-7 = w - 8
-7 + 8 = w
1 = w
hope this helped, blessings! :)
Answer:
This is indeed a function
The mean is the sum of all numbers divided by the number of numbers. We can set up an equation:

Where 'x' is the next quiz score she need. Solve for 'x'. Multiply 5 to both sides:

Add:

Subtract 322 to both sides:

So her next quiz score needs to be 73 in order to have a mean score of 79 on all her quizzes.