Math in the Midwest 2019 puzzle 1

answer??

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Describe the domain and range of y=2(3)^x-2+5

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)