Val says that the model below represents the equation Negative 2 x + 7 = 3 x + (negative 4). Tia says that the model represents the equation 7 minus 2 x = (negative 4) + 3 x. 2 negative x tiles and 7 positive 1 tiles = 3 x tiles and 4 negative 1 tiles Who is correct, Val or Tia? Only Val is correct. Only Tia is Correct. Both Val and Tia are correct. Neither Val nor Tia is correct.

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?