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Stels [109]
3 years ago
7

Dan's grandmother gave him $30 for his birthday. He decides to put $20 in a box for saving. Every week his parents give him $5 f

or his allowance. He decides to start adding $4 of his allowance to the box every week. What is the regression line for predicting the amount of money (ŷ) that will be in his box from x weeks of adding to the box?
Mathematics
1 answer:
kozerog [31]3 years ago
7 0

Answer:

y=4\cdot{x}+20

Step-by-step explanation:

Let the regresssion line be linear because of a constant amount of money coming in. Let y be the total amount of money in the box and x the weeks of adding to the box:

y=m\cdot{x}+c

We know that he puts $20 in the box from his birthday and $4 every week for x weeks. Therefore the total amount of money will be:

y=4\cdot{x}+20

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2 years ago
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cestrela7 [59]

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Zielflug [23.3K]
Okay, so this is basically telling you that there is no solution. You don't have to worry about there being one. You just have to justify (or explain) why there isn't one.

Basically, neither y or x is equal to anything. You couldn't make x equal to a value in y because x and y are both together in the equation and equal to numbers. 

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