Russells previous test scores are 70,74,87,85 what score does he need to get an average of 80

84 is the score that you Russell needs on the next test to achieve an average of at least 80.

Step-by-step explanation:

Russell's test scores are:  70,74,87 and 85

Average of the test scores = A = 80

Let thescore needed to achieve an average of 80 be x

Average =

84 is the score that you Russell needs on the next test to achieve an average of at least 80.

v v cj van config k tbs eng r.c r.c fcb fb gb frfr

x> 6

step-by-step explanation:

8x+8> 7x+14

8x-7x> 14-8

x> 6