Grace read a total of 170 pages over the last 3 days. On the second day, the number of pages she read was 5 more than 2 times the number of pages that she read on the first day. On the third day, she read 15 pages less than the number of pages she read on the second day.

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a