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xenn [34]
3 years ago
7

Louis is saving money for a car, he invests $1,200 in an account that pays an interest rate of 7.5%. How many years will it take

for the account to reach $14,000?
Mathematics
1 answer:
Artist 52 [7]3 years ago
3 0

Answer: n + d = 30

0.05n + 0.10d = 2.20

^^ ur system of equations

Step-by-step explanation:

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Answer:

Step-by-step explanation:

a) Yes.

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b) Yes

W=\{0,1,2,3,..,\}\ (whole\ numbers)\\\forall\ a,b\ \in\ 3W,\ a+b\in 3W\\since:\\a\ \in\ 3W \Longrightarrow\ \exists\ k_1\in W | a=3*k_1\\\\b\ \in\ 3W \Longrightarrow\ \exists\ k_2\in W | b=3*k_2\\\\a+b=3*k_1+3*k_2=3*(k_1+k_2) \in 3W\\

c) Yes

\forall n\ \in\ \mathbb{N}: \Longrightarrow\ n+1 \in\ \mathbb{N}\\

d) No

3\in V , 3+3=6\notin V\\

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