I got the same answer as you so try picking the answer that is closest to the answer you got sorry i couldn't help much
Answer:
Explanation
The answer would be 2times4 and you would add the rest of the zeros so, = 80000000000000000000
I think the right one is c
Convert to Hz from MHz: 88.9 MHz x 1x106Hz /1MHz = 8.89x107 <span>Hz </span>
#30 a point at which parts artificial structure are joined
