Experts please answer this 20 points

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 values cannot be probabilities? 0.08, 5 divided by 3, startroot 2 endroot, negative 0.59, 1, 0, 1.44, 3 divided by 5 select all the values that cannot be probabilities. a. five thirds b. 1.44 c. 1 d. startroot 2 endroot e. three fifths f. 0.08 g. 0 h. negative 0.59

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?