Didn't use algebra but Gary would be 3 and Karen would be 13 so in 2 years Gary would be 5 and Karen would be 15 and 5 x 3 = 15 so ya.
Answer:
a:) Integer Sequences
b:) 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, ...
Step-by-step explanation:
A)
-6x - 9/2