It costs a bicycle company $40 to make each adult bicycle and $30 to make each child's bicycle. The adult bicycle sells for $120, and the child's bicycle for $90. The company wants to make a minimum profit of $2,400. If x represents the number of adult bicycles the company sells, and y represents the number of children's bicycles and the company sells, which inequality models this situation?

(120x + 90y) - (40x + 30y) ≥ 2,400

Step-by-step 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.