In the United Kingdom, Alzheimer’s disease is said to affect one in fifty people over 65 years of age. If approximately 250,000 people over 65 are affected in the UK, how many people over 65 are there in total?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )