Kevin, a 13 year old boy, has a resting heart rate of 67 beats per minute. Using the lower and upper limit reserve training percentages of 50% and 85% respectively, what is Kevin's target heart rate range? 137–186
140–194
147–200
153–207

i do not get it   at all

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.