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SAT® Subject Test in Math 1 & 2

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Moderate

Linear Regression Model

SATSTM-CXFA7D

When Billy purchased his car, it was valued at $\$22,000$. After $1$ year it was valued at $\$17,000$, after $3$ years it was valued at $\$13,500$, and after $7$ years it was valued at $\$6800$.

Determine the least squares linear regression model and use it to approximate what the cars value was after $5$ years.

A

$4500$

B

$8500$

C

$9600$

D

$11500$

E

$10300$