Henry uses exclamation marks and questions in this section. What is the result? How do the two work together?

g

explanation:

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4

poner/ponerse

  mi hermano se pone enojado.

  mi hermano pone el plato en la cocina.

ir/irse

  mis abuelos se van a almorzar.

voy a bailar con mi novio esta noche.

lavar/lavarse

  ? te lavas las manos?

  tengo que lavar los platos.

dr eric sanderson is a character from the book "a world without us". acording to this story dr sanderson's goal is to determine what manhattan island was in the past, before it became a city. sanderson is an ecologist who is interested in the way manhattan looked like in the 17th century.