total points for the 6 tests would be 6 *87 = 522
total points of 1st 4 are: 93 + 87 +82 +86 = 348
522 - 348 = 174 points for 5th and 6th tests
174-4 = 170
170/2 = 85
85 +4 = 89
5th test was 89
6th test was 85
Answer:
3/8 of a book per week
Step-by-step explanation:
here is the answer (A) y=1/5 x
B. 7