Is the function f(x)=5x^2 even or odd? Why?

A.)The function is even because for any input, x, f(x)=−f(x).
B.)The function is odd because for any input, x, f(x)=f(−x).
C.)The function is odd because for any input, x, f(x)=−f(x).
D.)The function is even because for any input, x, f(x)=f(−x).

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)