John is five years older than his sister. the product of their present ages is 150.
john's present age is (blank) years, and this sister's present age is (blank) years
so i believe you have to answer this with the quadratic formula but i'm not sure.

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

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? )