I am not sure

look at the screenshot for question

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17