Elena is selling tickets for an amusement park. • She sells triple the number of student tickets as adult tickets.

• She sells 8 fewer senior tickets than adult tickets.

If Elena sells 15 adult tickets, does she sell at least 100 total tickets? Justify your work.

no

Step-by-step explanation:

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.

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.