Don’t know how to solve.

Mathematics

1 answer:

iVinArrow [24]2 years ago

3 0

Answer:

$122.88

Step-by-step explanation:

the phone decreases by 20% each year , that is

(100 - 20)% = 80% = $\frac{80}{100}$ = 0.8

the phone reduces by a factor of 0.8 each year , then after 4 years

value = $300 × $(0.8)^{4}$ = $122.88

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Step-by-step explanation:

You can solve this by looking at the x and y coordinates independently.

The distance between -7 and -0.5 is 6.5.

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$\frac{(3--9)}{(6--7)}$ = $\frac{12}{13}$ and $\frac{(-3--9)}{(-.5--7)}$ = $\frac{6}{6.5}$ which are both equal to ≈ .923077