Answer:
Part 1) The unit rate is 
Part 2) The unit rate is 
Part 3) The unit rate is 
Part 4) The unit rate is 
see the attached figure
Step-by-step explanation:
we know that
The formula to calculate the slope between two points is equal to

where
d ----> number of dollars (dependent variable or output value)
n ---> number of ounces (independent variable or input value)
Remember that the slope of the linear equation is the same that the unit rate
<u><em>Verify each case</em></u>
1) we have

This is a proportional relationship between the variables d and n
The slope is

therefore
The unit rate is 
2) we have
<em>First table</em>
take two points from the table
(4,1) and (16,4)
substitute in the formula of slope



simplify

therefore
The unit rate is 
3) we have

This is a proportional relationship between the variables d and n
isolate the variable d

The slope is

therefore
The unit rate is 
4) we have
<em>Second table</em>
take two points from the table
(1,4) and (2,8)
substitute in the formula of slope



therefore
The unit rate is 
<em>Answer:</em>
<em>we have
</em>
<em>
256^{\frac{3}{4}}
</em>
<em>
we know that
</em>
<em>
256=2^{8}
</em>
<em>
substitute
</em>
<em>
256^{\frac{3}{4}}=(2^{8})^{\frac{3}{4}}=2^{\frac{24}{4}}=2^{6}=64
</em>
<em>
therefore
</em>
<em>
the answer is the option
</em>
<em>
64</em>
<em>this is what i found </em>
Answer:
Factors can be set to zero in order to find the solutions, which are the x-intercepts on a graph.
ex:
x^2 + 4x - 4
(x + 2)(x + 2)
x+2=0
x=-2
x+2=0
x=-2
-2 would be the only x-intercept on the graph.
Someone correct me if I'm wrong, thank you
The correct length would be 2√ units