Karen took a science test where each correct answer was worth 2.5 points. She also correctly answered the bonus question worth 8 points. Her total points earned on the test was 45.5. Write and solve an equation to determine the number of questions Karen answered correctly

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!