Answer: 1.05 ·10⁴ mosquitoes
Explanation:
1,000mosquitoes/hour x 10.5hours =10,500 mosquitoes
Now you have to move decimal point as many space as needed left so that the number is less than ten.
10,500 ↪ 1.0500 because I moved decimal point 4 spaces, its 10⁴
Answer: 1.05 ·10⁴ mosquitoes