Answer: rate for postage purchased at the Post Office will remain at $0.55 (no change from 2020). Each additional ounce for a First Class Mail letter will cost $0.20, a five cent increase from 2020.
Step-by-step explanation:
Answer:
.20
Step-by-step explanation:
The word percent literally means "Out of 100". With that being said, 20% can be written as a fraction, mixed number or whole number as follows: 1/5 (fraction), 20/100 (mixed number) or .20 (whole number).
Make the u substitution
u=x^2
du=x dx
it should simplify the problem