Hello, I have read the threads about similar problems on this site, but nothing seems to work for me so perhaps I am doing something wrong.

I need to calculate commission varying by range:

.5% of sales up to 100
.75% of sales from 100 to 150
1% of sales above 150

I have tried using the IF function but can't figure out if there is a way to signify "if less than x AND greater than y, then z".