Charlotte needs to collect at least 5,000 signatures for her petition. she has already collected 3,187 signatures. write and solve an equation to determine how many more signatures charlotte needs.

Okay!

The most important part of this problem is knowing which inequality sign to use

Greater than >

Less Than  <

Equal to .. =

Greater or equal to ≥

Less than or equal to  ≤

Charlotte needs AT LEAST 5,000 votes, meaning she has to have 5,000 votes or more

That means we use this sign →  ≤

Now lets set up an equation to find how many more we need

5,000  ≤  3,187 + X

solve for X

1,813 ≤ X

Hope I helped :) Sorry for the long explanation

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.