In order to practice at home, tadeo purchased a basketball and a volleyball that cost a total of $67, not including tax. if the price of the basketball b is $4 more than twice the cost of the volleyball v. which system of linear equations could be used to determine the price of each ball?
a. b + v = 67; b = 2v ­- 4
b. b + v = 67; b = 2v + 4
c. b + v = 4; b = 2v ­- 67
d. b + v = 4; b = 2v + 67

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.

the answer for the second equation is (4,0)