aausrine6663 aausrine6663 26-05-2023 Mathematics contestada Leon knows that his first four test grades were 95 , 83 , 92 , and 79 . Use the formula x‾=x1+x2+…+xnn x ‾ = x 1 + x 2 + … + x n n to find Leon's grade on the fifth test if his test average is 87.6 .