Please help me on number 10!!

Answer:
1.9 × [tex]10^{7}[/tex]
Step-by-step explanation:
To calculate the population in New York we require to multiply
7600 × 2.5 × [tex]10^{3}[/tex] ← express 7600 in scientific notation
= 7.6 × [tex]10^{3}[/tex] × 2.5 × [tex]10^{3}[/tex]
= (7.6 × 2.5) × [tex]10^{(3+3)}[/tex]
= 19 × [tex]10^{6}[/tex] ← express 19 in scientific notation
= 1.9 × [tex]10^{1}[/tex] × [tex]10^{6}[/tex]
= 1.9 × [tex]10^{(1+6)}[/tex]
= 1.9 × [tex]10^{7}[/tex]