What stamens are true help please

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

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 then 3 times the number. option 35 37 39 41