1. Give the scientific notation of 8.7 billion.
 8.7 billion = 8 700 000 000
 Scientific notation is the process of multiplying the given number by 10 to the power of n.
 Since billion has 9 zeros that’s equals to 10^9
 => 8.7 x 10^9
 let’s try solving this
 => 8.7 x (10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10)
 => 8.7 x 1 000 000 000
 => 8 700 000 000
 Thus, our scientific notation of 8.7 billion is 8.7 x 10^9