Step-by-step explanation:
Linear equations. Make 2 new equations from the question. Name the first number as x and the second as y...
Which of the following is the correct way to write seventy million as a numeral?
As I see no choices the right way to write seventy million as a numeral is

Hope I helped!
You can exploit the difference-of-squares identity,
<em>a</em>² - <em>b</em>² = (<em>a</em> - <em>b</em>) (<em>a</em> + <em>b</em>)
Then
101.5² - 100.5² = (101.5 - 100.5) * (101.5 + 100.5)
101.5² - 100.5² = 1 * 202
101.5² - 100.5² = 202