Which of the equations model the input (x) and output (y) table shown? select all that apply

Add the fractions and simplify 1/2+ 1/3

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? )

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c