(Algebra || is Soo hard!) Please someone help me:)

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

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)

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?