A baseball player won 28 out of the 35 games that he pitched. What percentage of games did they win? An electrician worked 8 months out of the year. What percentage of the year did they work?

A student took a test and got 35 questions correct and 10 incorrect. What percentage of the answers did they get correct?

A person put $500 in a savings account one year and earn $20 in interest. What was the percent of interest earned?

There are 36 carpenters on a crew. One day only 27 showed up. What percentage of workers were missing?

Help me on this and don't use this for free points.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.