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Goshia [24]
3 years ago
5

matthew invested $5000 in an account that earns 3.8% interest . how much did matthew have in his account after 3 years

Mathematics
1 answer:
lys-0071 [83]3 years ago
5 0

the assumption being "simple interest" rate of 3.8%, as opposed to "compound interest".

\bf ~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$5000\\ r=rate\to 3.8\%\to \frac{3.8}{100}\dotfill &0.038\\ t=years\dotfill &3 \end{cases} \\\\\\ A=5000[1+(0.038)(3)]\implies A=5000(1.114)\implies A=5570

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\displaystyle \begin{aligned} f(z_1)&=(z_0)^2+c \\ &=(1+2i)^2+(2-3i) \\ &= (1+4i+4i^2)+(2-3i) \\ &=1+4i-4+2-3i \\ &=-1+i \end{aligned}

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Hence, our answer is C.

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3 years ago
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