Answer:
alright
Explanation:
using the image provided, let's go in order:
1. non-zero digits are significant: 0.000407 = 2 sig figs so far
2. captive zeroes are significant: 0.000407 = 3 sig figs now
3. trailing zeros are only significant if there is a decimal point: no trailing zeros
4. leading zeros are NEVER significant = 4 leading zeros, 3 sig figs
5. exact number have an infinite amount of sig figs: this is NOT an exact number.
good luck!