Answer: 1.08 x 10¹¹
Step-by-step explanation:
1995: 1.8 x 10¹¹ --> 1.80 x 10¹¹
1965: - 7.2 x 10¹⁰ --> - 0.72 x 10¹¹
1.08 x 10¹¹ (note that 10¹¹ is the "like" term)
