In which region of the periodic table would an element with the electron configuration below be located?

1s2,2s2,2p6,3s2,3p5

This element lie in the region of HALOGENS.

Step-by-step explanation:

The element with the electron configuration 1s2,2s2,2p6,3s2,3p5 is Chlorine(Cl)

" Chlorine is a chemical element with symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature "

Hence the element with the given electron configuration lie in the region of halogens.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

i believe the answer is the polygon, heptagon.