Please show work for problems

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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)