Answer:
<h2>b. (144 + 121)(144 - 121)</h2>
Step-by-step explanation:
Use a² - b² = (a + b)(a - b)
144² - 121² = (144 + 121)(144 - 121)
73/100 is already reduced
0.12 x 3 years = 0.36
<span>0.36 X $25,000 = $9,000 </span>
<span>25,000 - 9000 = $16,000 </span>
<span>so its 3 1/2 years</span>