Protein, like carbohydrates and fat, contains calories. The following table shows different amounts of protein and their
related amounts of calories. Is this relationship proportional?

Number of Calories 18, 36, 48, 66
Grams of Protein
3, 6, 8, 11

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Precalculus question, image attached.

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)