Answer:
-2/3, -5/8, 11/12, 21/4
Step-by-step explanation:
For a, x = 6 (3+6=9) and for b, y=5 (2x5=10)
The system of equations representing the number of Blue-ray discs and DVD's after t months are:
507 + 26t
925 - 12t
Each month, the number of DVD's sold decreases by 12, this can be modelled as:
number of DVD in opening month - (monthly decrease x number of months)
Number of DVD's in t months = 925 - 12t
Each month, the number of Blue-ray discs sold increases by 26, this can be modelled as:
number of blue-ray discs in opening month + (monthly increase x number of months)
Number of Blue-ray discs in t months = 507 + 26t
To learn more about growth rate, please check: brainly.com/question/18760477
Answer:
12 * 3 * 5 * 5 = 900
Step-by-step explanation:
