Which statement illustrates the most appropriate tone and vocabulary to use in a letter of complaint?

a. the widget you sent is a piece of junk.
b. the only thing your widget is good for is being a paperweight.
c. i was disappointed in the quality of the widget i purchased from your online store.
d. what a waste of money and postage your widget is! i'm sorry i ever saw this piece of junk.

Plz hurry the graph below shows the distances, in miles, that a dragonfly can travel in a certain number of hours: a graph titled motion of a dragonfly shows time in hours on the x axis and distance in miles on the y axis. the scale on the x axis shows number from 0 to 10 at increments of 2 and on the y axis the numbers are shown from 0 to 250 at increments of 50. a straight line joins the ordered pairs 0, 0 and 2, 50 and 4, 100 and 6, 150 based on the graph, what is the dependent variable, the equation relating the two variables, and how far will the dragonfly travel in 24 hours if it continues to fly at the same speed?