What is the surface area of a sphere with a circumference of 30 ft im lost and i need directions not just a answer

Which graph represents an even function?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

What is the value of f(x) = 2.2 for f(-2)?