Solve the system by substitution , PLS HELP ILL MARK BRAINLIST y = x + 1

2x + y = 4

If you answer right ill give brainliest, : )

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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?