3. (5.7.12) On June 2, 2010 USA Today reported a story from Bloomberg News that said that the total price tag for the project to build the new F-35 Joint Strike Fighter would be 65% higher than the original $232 billion estimate. The cost now is estimated to be $382 billion. The total cost of each plane would be $112.4 million, up 81% from the original $62 million. The cost to produce each plane would be $92.4 million, about 85% higher than the original estimate of $50 million. a. Check the arithmetic to see that the three percentage increases reported are correct. I). Can you explain how the project cost can have increased by just 65% when the overall total per plane increased by 81% and the construction cost alone increased by almost 85%? 4. (5.7.3) Check that your own GPA from last semester has been computed correctly using the rules in effect at YSU. If you are in your rst semester and don't yet have a GPA, imagine the grades you expect at the end of this semester and figure out what you GPA would be. Please be sure to specify your class schedule, number of credit hours per course, and course grade. Show all your work. 5. (5.7.4) A UMass Boston student has earned 55 credits toward his degree but has a GPA ofjust 1.80. The registrar has informed him that he is on probation and will be suspended unless his overall GPA is at least 2.0 after one more semester. a. If he takes 12 credits, what is the minimum GPA he must earn in that semester to avoid being suspended? b. Answer the same question if he takes 9 credits. c. What if he took just 6 credits? d. Write a few sentences describing what these situations mean