Question 1076070
Let n be the number of tests Shauna has taken. Then:
84n+96=86(n+1)
2n=96-86=10
n=5
Let m be the score on her last test. Then:
5*86+m=85*6
430+m=510
m=80 as her mark on the last test. &#9786;&#9786;&#9786;&#9786;