Daniel wants to have a 90 average in his math class at the end of the year. he is trying to determine what he needs to get on his final exam, which accounts for 10% of his grade, for this to work. tests are weighted 50% of the grade, and he currently has a 85 for his test average; quizzes are weighted 15% of his grade, and he currently has a 95 quiz average; homework is weighted 15% of his grade and he currently has a 98 homework average; and projects are weighted 10% of his grade and he currently has a 92 project average.
what is the lowest whole percentage daniel can make on his final exam for him to end up with a 90 in the class?