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mario62 [17]
3 years ago
8

Please help me I'm very confused

Mathematics
2 answers:
EastWind [94]3 years ago
6 0
The answer to your question would be A. replace y with 9. why?? well here is how you would solve this problem
  1.    5+4y   when y=9 (first plug 9 into the y's spot)
  2.    5+4(9)    then multiply 4 times 9 (that's what 4(9) means) 
  3.    5+36      then add 
  4.   41

the answer to the equation is 41 but the answer to your problem is A.
Delicious77 [7]3 years ago
4 0
Id say its between a and c. your best bet would be a since you have to plug in 9 for y.
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Answer:

The interest rate of Jess's account was 7%

Step-by-step explanation:

A = P * (1 + rt)

A = final amount

P = initial principal balance

r = annual interest rate

t = time (in years)

Replacing with the values we know:

A =  P * (1 + rt)

8,150 = 5,000 * (1 + r * 9)

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1.63 - 1 = 9r

0.63 = 9r

r = 063/9

r = 0.07 = 7%

The interest rate of Jess's account was 7%

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