Aregular octagon has an apothem of approximately 7.8 ft and a perimeter of approximately 52.0 ft. find the area of the octagon

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )

According to the national center for health statistics, in 1990, 28 % of babies in the united states were born to parents who were not married. throughout the 1990s, this increased by approximately 0.6 % per year. if this trend continues, in which year will 52 % of babies be born out of wedlock? in__52 % of babies will be born out of wedlock

1/3x^2+2 what does the graph look like