Find the solution of each equation for x= -5 7. y= -3x -18: y= 8x

Through: (-3,-3) parallel to y= 7/3x+3

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)

With number 11 ( show how you got the answer)