I WILL MARK YOU BRAINLIEST, FREINDS REQUEST , 5 STARST IF ITS RIGHT, AND A HEART IF YOU HELP. Is this a linear graph I guess you would say? Im doing a performance task for math on E d g e nuity so could someone please help?

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

The half-life of a certain material is 0.004 second. approximately how much of a 20-gram sample will be left after 0.016 second? a. 5 grams b. 16 grams c. 0.32 gram d. 1.25 grams

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?