How to improve in math from a 29 to a 33+

I know all the mathematical concepts from Ultimate guide to Math ACT; I study: I review my mistakes meticulously, but I can’t seem to get higher than 29 consistently. Practice test over practice test -I taken around 7- I can’t seem to improve my test scores for ACT Math. Any help would be appreciated.

Do you finish on time?

If you need to pick up time, using the calculator can help.

I know it is hard to do, but if one problem is taking up a lot of time, you have to skip it and move on. There may be easy problems ahead.