Which of the following sets represents the domain of the function shown? {(2, 7), (15, 13), (21, -4), (24, 18)}

1. {-4, 7, 13, 18)
2. {(7,2), (13, 15),(-4, 21), (18, 24)}
3. {-4, 2, 7, 13, 15, 18, 21, 24}
4. (2, 15, 21, 24)

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.