Which equation represents a line with a slope of zero?

Which of the following is an equation of a line parallel to the equation y=4x+1?

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)

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog