What is the unit rate of 1/2 dozen pencils in 1/3 box

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

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?