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Part $1$

An auto repair shop borrowed $$$$18$ comma $000$ to be repaid by semi dash annual payments over $8$ years. Interest on the loan is $5\%$ compounded semi dash annually.

$($a$)$ What is the size of the periodic$$ payment?

$($b$)$ What is the outstanding principal after payment $7?$

$($c$)$ What is the interest paid on payment $8?$

$($d$)$ How much principal is repaid in payment $8?$