18 oz of premium salad mix was made by combining 12 oz of arugula which costs $2/oz with 6 oz of spinach which costs $5/oz. Find the cost per oz of the mixture. A) $4.50/oz
B) $3.90/oz
C) $3/oz
D) $3.54/oz

sorry, i can't understand your question. will later if you describe more clearly!

: )

idk

step-by-step explanation:

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14