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hodyreva [135]
2 years ago
15

Pre cal help please

Mathematics
1 answer:
ss7ja [257]2 years ago
7 0

We have the following function

f(x)=\frac{3}{x+2}-\sqrt{x-3}

We want to know what is the value of f(x) when x is 19

f(19)=\frac{3}{19+2}-\sqrt{19-3}=1/7-4=\boxed{-27/7}

If you have additional questions feel free to ask.

Hope this helps.

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3) Lane and Zack purchased a house for $245,000 in 2016. The house loses 4% of its value each year,
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Answer:

$138,345

Step-by-step explanation:

This is a compound decline problem, which will be solve by the compound formula:

F=P(1-r)^t

Where

F is the future value (value of house at 2030, 14 years from  2016)

P is the present value ($245,000)

r is the rate of decline, in decimal (r = 4% = 4/100 = 0.04)

t is the time in years (2016 to 2030 is 14 years, so t = 14)

We substitute the known values and find F:

F=P(1-r)^t\\F=245,000(1-0.04)^{14}\\F=245,000(0.96)^{14}F=138,344.96

Rounding it up, it will be worth around $138,345 at 2030

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