A photographer charges x per hour and y per photograph printed. Ms. Wright purchased 4 hours of photography and 35 prints. Kelsey purchased 6 hours of photography and 45 prints. Ms. Wright spent
$255 and Kelsey spent $345. The equations below represent the situation. 4x+35y=255 //
6x +45y=345 The solution (20,5) represents the solution. What does the solution mean in terms of
the problem.

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

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.