1. (10pts) On a 150-question test, a student got 80 correct answers. What percent of the problems did the student work correctly? - show work in detail Q2. (10pts) How much HCI (hydrochloric acid) is in a 100-milliliter bottle that is marked 50% HCI? - show work in detail Q3. (15pts) $265,000 is borrowed to buy a house. If the simple interest rate on the 30-year loan is 8.25%, find the interest paid on the loan and the total amount paid back. show work in detail Q4. (15pts) Suppose that the original price of a shirt is $50. Which is better, a 60% discount or a discount of 30% followed by a discount of 35% of the reduced price? Explain your