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saveliy_v [14]
3 years ago
7

This is the hardest question we'll for me

Mathematics
2 answers:
sleet_krkn [62]3 years ago
6 0

Answer:

12.6

Step-by-step explanation:

a. 315 - 25 = $290

b. After each payment, the amount owed decreases. Therefore, the balance decreases.  

second part of this: write equation for calculating the amount owed a for any number of payments n                      $      $25(n-1)  =a

I cant draw a graph on here for you, but as n increases, then a decreases

d. as n increases by 1, how does a change?  Answer: A decreases by $25 each time n increases by one

e. He will need to make 12.6 payments

Natali [406]3 years ago
5 0
Cost of tablet $315
monthly payments of $25

a. 315 - 25 = $290
b. After each payment, the amount owed decreases. Therefore, the balance decreases.  
second part of this: write equation for calculating the amount owed a for any number of payments n                      $      $25(n-1)  =a

I cant draw a graph on here for you, but as n increases, then a decreases
d. as n increases by 1, how does a change?  Answer: A decreases by $25 each time n increases by one
e. He will need to make 12.6 payments

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Answer:

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Step-by-step explanation:

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f(x) is a fourth order polynomial, so it has 4 roots.  Use rational root theorem to find possible rational roots.

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By trial and error, the zeros are -11, -3, 1, and 3.

f(x) = (x + 11) (x + 3) (x − 1) (x − 3)

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