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Ulleksa [173]
2 years ago
7

Money in a bank triples every 10 years. If $100 is deposited today, what will its value be after 40 years? PLEASE SHOW ME STEP B

Y STEP AND I WILL GIVE YOU BRAINLIEST!!
a) $400 b) $1200 c) $6400 d) $8100 e) $24,300
Mathematics
1 answer:
LenKa [72]2 years ago
7 0

Answer:

d) $8,100

Step-by-step explanation:

Given information:

  • Money triples every 10 years
  • Initial deposit = $100
  • Number of years invested = 40 years

If the money triples (multiplies by 3) every 10 years,
then in 40 years time it will triple <u>4 times</u>, as 40 ÷ 10 = 4

⇒ Account balance after 40 years = $100 × 3 × 3 × 3 × 3

                                                         = $100 × 3⁴

                                                         = $8,100

<u>Proof</u>

In 10 years time the balance of the account will be:

$100 x 3 = $300

In another 10 years time, the balance of the account will be:

$300 x 3 = $900

In another 10 years time, the balance of the account will be:

$900 x 3 = $2700

In another 10 years time, the balance of the account will be:

$2700 x 3 = $8100

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Answer:

B

Step-by-step explanation:

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3x+5/2=y                  So the slope is 3 and we know it can only be either B or D

Now we need to find which line passes through (7,-2) and we find this by plugging 7 into B and D

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3 years ago
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STatiana [176]
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3 years ago
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LiRa [457]
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The slope through these two points is 
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-------------------------------------------

For function g, you'll use (2,4) and (3,20)

The slope through these two points is
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-------------------------------------------

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The slope through these two points is
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-------------------------------------------

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3 years ago
How much is a 15 percent down payment on a purchase of 205,000
insens350 [35]
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$30,750 is your answer

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6 0
3 years ago
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