melekatoa
06.07.2020 •
Mathematics
A car’s value varies inversely with its age. Jackie bought a 10-year-old car for $2,400. Write the equation that relates the car’s value, v, to its age, a. What will be the value of Jackie’s car when it is 15 years old ?
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Ответ:
$1,600
Step-by-step explanation:
Inverse relation:
v = k/a
where v = value of car, and a = age in years.
To find k, we use a known value
2400 = k/10
k = 24000
The inverse relation is
v = 24,000/a
At 15 years, a = 15.
v = 24,000/15 = 1,600
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