Abathtub contains 15 gallons of water. the circular drain opening of the tub has a radius of 21 mm. what is the approximate circle circumference of the drain opening?

Me. i can't figure out this question. give an explanation too. .

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1