Find the distance around a circle with a diameter of 15.6 meters

pls hurry up I'm timed:)

Astore manager records the total visitors and sales, in dollars, for 10 days. the data is shown in the scatter plot. what conclusion can the store manager draw based on the data? question 3 options: an increase in sales causes a decrease in visitors. an increase in sales is correlated with a decrease in visitors. an increase in visitors is correlated with an increase in sales.

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is