Kinetic energy is energy in a moving object. Energy stored in chemicals, such as in a battery, ischemical energy;energy in moving electrons, as in an electric current, iselectric energy;and energy that can be released under certain conditions ispotential energy.

Consider the original price as 100%. Then the price after an increase of 4% is 104%. To find the original price, divide the price after the increase, $17.16, by 104% (or 1.04).
$17.16-1.04 = S16.50 $ 16.50 = original price

Color television uses red, blue, and green "guns" to direct electron streams toward the phosphors in the front of the picture tube, producing the full color spectrum when combined properly.