Find (f circle f)(3) f(x)=x^2-x

When can u say there is no solution for a system of linear inequalities? explain your answer and show with a system and graph

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)