A circular drop of oil has a radius of 10cm. If this radius increases by 5% then by 10% and finally by 15%, find
the new area of the circle. (Area of circle A =3.14 r 2
)

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? )