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What ia the sum if the first 7 terms of the geometric series

Four equations are shown below.equation 1: y=2*equation 2: y=2x-5equation 3: y=x2 + 6equation 4: tdentify one linear equation and one nonlinear equation from the list.why each equation you identified is linear or nonlinear.nd one nonlinear equation from the list. state a reasonlinear equation

Parallel lines r and s are cut by two transversales, parallel lines t and u. which angles are corresponding angles with angle 8