Frank can sell 3 phone per day. He wants to sell 57 phones. How long will it take him to reach his goal if he has already sold 21 phones? Include your equation with your answer

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241

One integer is 8 times another. if the product is 72, then find the integers

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? )