hi guys, my cars been making this noise for the last 2 years , but it has gotten especially worse this summer. when im driving over a bump ill hear this noise that sounds like the battery bouncing up a few inches the dropping back down. (ive confirmed thats not the case) also sometimes when i go to make sharp turns, like in a parking lot, ill hear a popping noise. this noise is much worse and happens nearly every time i go in reverse while turning sharp, like when backing into a parking spot. and is even worse when i back into my parking spot in front of my apartment, which is at a downward angle (so im backing up and turning, up a hill) im guessing control arms but before i shell out $100 (they have gone down in price considerably at rockauto) i just wanted to get everyones opinions.

thanks in advance!