Select all of the following for which there exist nonzero constants which can be substituted into the equation to make it true.
a) a/(x-2)(x+7)=b/(x-2)

b) a/(x-2)(x+7)=b/(x-2)+c/(x+7)

c) a/(x-2)(x+7)=b/(x-2)+c/(x+7)+6

d) none of the above?

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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? )

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex