Answer: $317
Step-by-step explanation
Increasing by 20% means we involve the multiplier 1.20
Think of it like 100% + 20% = 1 + 0.20 = 1.20
So we go from 330 to 330*1.20 = 396 dollars.
Then we'll have a 20% discount. If you save 20%, then you pay the remaining 80%; therefore we have the multiplier 0.80
0.80*396 = 316.80 is the final price before rounding to the nearest dollar.
Here's how we write everything on one line: 330*1.20*0.80 = 316.80
Round 316.80 to the nearest dollar to get $317 as the final answer