a=325 B=-4600

-(-4600)/2(325) = 4600/650 = 7.076923

325(7.076923)2 - 4600(7.076923) + 145000 = 4599.99995 - 32553.8458 + 145000 = 117046.15415

(7.076923, 117046.15415)

After 7.076923 years, the home's value is 117046.15415.