7.4 × 10-4 written in regular notation is: 0.00074
(-10) to the power of negetive 2
47,470
45,300
24,000
30,000
23000
2.1x1010 (30,000 x 700,000)
50,600 10 to the fourth power = 10000 10 to the second power = 100 5 x 10,000 = 50,000 6 x 100 = 600
100 times less
4.526*10-4 = 0.0004526
1.9647 10^4 = 19647
37000