A student earned grades of 84,78,84,72 on her four regular tests she earned a grade of 78 on the finial exam and 86 on her class projects her combined homework grade was 87 the four regular tests...

A student earned grades of 84,78,84,72 on her four regular tests she earned a grade of 78 on the finial exam and 86 on her class projects her combined homework grade was 87 the four regular tests count for 40% the final counts as 30% and the projects count as 10% and homework's counts as 20% what is her weighted mean grade round one decimal place