Problem

6) Find the simple interest and balance for each year, and then find the compound interest for the situation. Round answers to the nearest hundredth. Include appropriate units in final answer. Use a calculator if needed.
Madison invested $$ 8, 000$ at $7 %$ for 3 years. How much interest did she make?
What is the balance (total money) of Madison's investment at the end of Year 1 ?
$A = $ 8, 400$
$A = sgh 640$
$A = $ 8, 560$
$A = $ 8, 480$

Answer

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Answer

$A_{1} = 8560$

Steps

Step 1 ： $I = P \times R \times T$

Step 2 ： $I = 8000 \times 0.07 \times 1$

Step 3 ： $I = 560$

Step 4 ： $A_{1} = P + I$

Step 5 ： $A_{1} = 8000 + 560$

Step 6 ： $A_{1} = 8560$

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