If you have to multiply each decimal by 100 so it’ll make more sense and sort from there :)
Answer:

Step-by-step explanation:
To Calculate the percentage Increase
<u>Step 1</u>: Subtract the old value from the new value
1.8 mg - 1.2 mg = 0.6 mg
<u>Step 2:</u> Divide the difference by the Old Value

<u>Step 3: </u>Multiply by 100

The Percentage Increase in Iron is 50%.
Answer:
This is a function y = mx + b:
- You start with $50, so the y-intercept(b) is 50.
- Adding $20 a week means that the slope(m) is 20.
So, the function would be y = 20x + 50, where y is the dollar amount after x weeks and x cannot be greater than 12.
1/2, I divided 2.50 by 1.50 and ended up getting 1/2.