The domain and range of Y = 1.3x + 8 are both [-infinity, +infinity]
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it equals 13X.
13x
x + 13x + 10x = 50 - 6
7 + 13x = -9 ie 13x = -9 - 7 x = -16/13 or "Minus one and three thirteenths"
13x + 15 = 11x - 5 2x = -20 x = -10