Six time the sum of a number and 8 is 30. find the number

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)

If m is the midpoint of ln and ln=27.8 find the length of mn

If f(x) = x squared and g(x) = x - 4 what value is equivalent to (f•g)(10)