15 boxes of ORNAments were divided equally among 4 christmas trees How many boxes of ORNAments went on each tree. Between what two whole numbers does your answer lie

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13

answer: correct

step-by-step explanation: