Question 11755
Let P be the price the good truck.

The low end of the range would be:
 ($12,000 + (0.08)($12,000) + $84.00)
($12,000)(1.08) + $84.00 = $12,960 + $84.00 = $13,044.00

The high end of the range would be:
($15,000)(1.08) + $84.00 = $16,200 + $84.00 = $16,284.00

This can be writen:

$13,044.00 <= P <= $16,284.000  Including tax & license. (<= means less than or equal to)