% = (Change/Original) * 100
= (2.9/15.9) * 100
= 0.182389937 * 100
= 18.2389937
= 18%
-3x + 4 = -17
-3x = -21
-x = -7
x = 7
The answer is 7
Answer:
Problem 7) C
Problem 8) B
Step-by-step explanation:
Recall that inverse variation has the form:

Where <em>k</em> is the constant of variation.
Problem 7)
We are given that <em>y</em> = 39 when <em>x</em> = 1/3. Thus:

Solve for <em>k: </em>
<em />
<em />
<em />
Hence, our equation is:

Then when <em>x</em> = 26, <em>y</em> equals:

Problem 8)
We are given that <em>y</em> = 25 when <em>x</em> = -1/5. Thus:

Solve for <em>k: </em>
<em />
<em />
<em />
Hence, our equation is:

Answer:
C). x = 1557.70 feet.
Step-by-step explanation:
tan 48 = 1730 / x
x = 1730 / tan 48
x = 1557.699 feet.