4.0987 rounded to the nearest tenth.
4.0987
^ This is the tenths place
Look at the number after it, if it's 5 or more, round up, if it's 4 or less, round down.
<span>It's 9, so we round up to 4.1</span>
It would be a 90%. In the calculator 18 is what percent of 20.
Answer:

Step-by-step explanation:
ill suppose that you mean : "solve for b" not for d, since there is no d term in the formula given. So:
