Answer:
parallel lines
Step-by-step explanation:
the slope is 0
The amount of blue color in the green paint is an illustration of ratios and proportions.
Cheryl's green paint has more blue color
The proportion of blue color is calculated as:

So, we have:



Express as percentage




Express as percentage

By comparison: 40% >37.5%
Hence, Cheryl's green paint has more blue color
Read more about proportions at:
brainly.com/question/21126582
Paul needs to invest $10000 at 6% interest and $30000 at 10% interest to make a total of 9% return on his $40000.
<em><u>Explanation</u></em>
Suppose, the amount of money at 6% interest is
As Paul has total $40000 to invest, so the amount of money at 10% interest will be: 
His intent is to earn 9% interest on his $40000 investment. So, the equation will be......

So, Paul needs to invest <u>$10000 at 6% interest</u> and ($40000- $10000) or <u>$30000 at 10% interest </u>to make a total of 9% return on his $40000.
N=10 ...................................