Does anyone know a simple and effective way to study for the ACT math section?

I need to bring my score up for the math section. Math had never really been my strongest subject. Studying for this section feels very overwhelming for me, because of the amount of stuff I have to remember. And I feel like I don’t know where to start and what I’m doing isn’t enough. My superscore is at a 19 and I just need to be at a 20. If anyone can give me tips I would appreciate it.

Does anyone know a simple and effective way to study for the ACT math section?
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