Question

Really need help with these ? ASAP!!
1. Which numbers are greater than 3*10^-7
Check all that apply
A. 9*10^-9
B. 2*10^-5
C. 6*10^-7
D. 5*10^-8
E. 2*10^-7

2. Which is the best order of magnitude estimate for 29,300?
A. 10^4
B. 10^5
C. 10^6
D. 10^7

3. What is the best order of magnitude estimate for 0.00006?
A. 10^-3
B. 10^-4
C. 10^-5
D. 10^-6

*Thank u so much in advance..I've tried these problems many times and I keep getting them wrong so I really need help!