Please look at the image attached.
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1 answer:
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Given, Jason had an amount of $d in the piggy bank.
After one week, Jason doubled the amount in the piggy bank.
So, after one week the amount in the piggy bank = $ = $(2d)
Another week later, Jason added $20 in the piggy bank.
So after another week, the total amount in the piggy bank = $
Given, that time the piggy bank had $50 in it.
So we can write the equation as,
To find the value of d, we will move 20 to the right side by subtracting it from both sides. We will get,
Now to find d, we will move 2 to the right side by dividing it to both sides. We will get,
We have got the required answer.
The value of d = $15.
Answer:
Step-by-step explanation:
- This is a neat question. I suggest that you graph it on desmos. You will lean a bunch by doing it. These are the graphs you should put on there.
- y = 1/(abs(x - a) - 1):In red
- When you use your down arrow, a new entry will be given you. You can use your mouse to operate the slider you get when you type a = 5
- so your next graph should be a = 5
- Use your down arrow again. Put in x = 4: Blue Line
- Use your down arrow again. Put in x = 6: Green Line
Be patient with this. Play with the sliders to see what they do. I believe you are correct, but I am not certain of the second union although it does look correct.
The graph I have enclosed is of what I have described in the steps above. Make sure you try it all out.
