Jackie scored 82 and 88 on her first two quizzes. write and solve a compound inequality to find possible values for a third quiz score that would give her an average between 80 and 85, inclusive.

a. 80 < = 82 + 88 + n / 3 < = 85; 70 < = n < = 85

b. 70 < = 82 + 88 + n / 3 < = 85; 80 < = n < = 85

c. 80 < = 82 + 88 + n / 3 < 85; 70 < n < 85

d. 82 < = 80 + 85 + n / 3 < = 88; 70 < = n < = 85

Answer : option A

Jackie scored 82 and 88 on her first two quizzes

Let n be the score of third quiz

Average of 3 quiz =

average between 80 and 85, inclusive.

so average lies between 80  and 85

Question says 80  and 85 inclusive. so we use <= or >= symbol

So inequality becomes

( multiply all sides by 3)

(subtract all sides by 170)

so option A is correct

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.