In a piggy bank is a sum of money amounting to $3.70 it consists of all dimes and quarters if there are 19 coins at all write a system of equations to describe the situation

How do you determine whether a relationship represented as as graph is linear or nonlinear

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? )

Factor the polynomial. b^2 + 4b + 4