Answer:

Step-by-step explanation:
Given
See attachment
Required
Determine the slope of the line
From the attachment, we have the following points

and

The slope m is then calculated using:

Substitute values for the x's and y's




<em>Hence, the slope is 0</em>
Let the amount invested be P, then
0.07P = 420
P = 420/0.07 = 6000
Therefore, amount invested = $6,000
3/8 for black and 2/8 for white since there are a total of 8 sections you take the amount of each color section and put it over the number of total sections.
The expression would be
1/2h + 1