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Fidel has a rare coin worth 
$550. Each decade, the coin's value increases by 
10%.
Which expression gives the coin's value, 6 decades from now?
Choose 1 answer:
(A) 
550*0.1^(6)
(B) 
550(1+0.1)^(6)
(c) 
550+(1+0.1)^(6)
(D) 
550+0.1^(6)

Fidel has a rare coin worth $550 \$ 550 . Each decade, the coin's value increases by 10% 10 \% .\newlineWhich expression gives the coin's value, 66 decades from now?\newlineChoose 11 answer:\newline(A) 5500.16 550 \cdot 0.1^{6} \newline(B) 550(1+0.1)6 550(1+0.1)^{6} \newline(C) 550+(1+0.1)6 550+(1+0.1)^{6} \newline(D) 550+0.16 550+0.1^{6}

Full solution

Q. Fidel has a rare coin worth $550 \$ 550 . Each decade, the coin's value increases by 10% 10 \% .\newlineWhich expression gives the coin's value, 66 decades from now?\newlineChoose 11 answer:\newline(A) 5500.16 550 \cdot 0.1^{6} \newline(B) 550(1+0.1)6 550(1+0.1)^{6} \newline(C) 550+(1+0.1)6 550+(1+0.1)^{6} \newline(D) 550+0.16 550+0.1^{6}
  1. Problem Understanding: Understand the problem.\newlineWe need to find the expression that represents the value of the coin after 66 decades, given that it increases by 10%10\% each decade. An increase of 10%10\% each decade means that the value of the coin is multiplied by 1+1 + the rate of increase (0.1)(0.1) each decade.
  2. Translation of Percentage Increase: Translate the percentage increase into a growth factor.\newlineA 10%10\% increase can be represented as a growth factor of 1+0.11 + 0.1, which is 1.11.1. This means that each decade, the coin's value is multiplied by 1.11.1.
  3. Application of Growth Factor: Apply the growth factor for 66 decades.\newlineTo find the value of the coin after 66 decades, we need to multiply the initial value by the growth factor raised to the power of 66. This is because the coin's value is compounded each decade.
  4. Expression with Initial Value and Growth Factor: Write the expression using the initial value and the growth factor.\newlineThe initial value of the coin is $550\$550, and the growth factor for each decade is 1.11.1. Therefore, the expression for the coin's value after 66 decades is 550×(1.1)6550 \times (1.1)^6.
  5. Matching the Expression with Options: Match the expression with the given options.\newlineThe correct expression we found is 550×(1.1)6550 \times (1.1)^6, which matches option (B) 550(1+0.1)6550(1+0.1)^{6}.

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