In a school building, rhere are 8 exterior doors and twelve stairways to enter the second floor. find the total number of ways to reach the second floor.

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

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?

Can some one explain this i got sent this. is this a threat i’m scared