Derek is 7 years older than Vivian. In 6 years the sum of their ages will be 75. How old is Derek now?
1 answer:
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Answer:
[see below]
Step-by-step explanation:
I used a graphing program to graph the given system. I also graphed the points given.
Options B's choice lies in the double shaded area, so it would be a solution to the system.
See the graph attached!
Hope this helps you!
