The area of a circle is 81pi in. squared. What is the circumference, in inches? Express your answer in terms of pi

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Will give brainliest plz hurry lexie surveyed 4 teenagers to find out approximately how many hours, per week, they read for fun, and how many siblings they have. brooke said she reads about 10 h a week for fun, and that she has 5 siblings. celia said she has 1 brother and 1 sister and reads for fun about 3 h each week. henry said he has 2 brothers and reads for fun about 30 min each week. jude said he doesn't read for fun and has 3 brothers and 3 sisters. use this information to complete the data table. express your answers as whole numbers or decimals. name hours of fun number of siblings brooke celia __ henry jude