The retail selling price of a high-definition tv is $1452. this price is $126 plus three times the wholesale cost.

if w is the wholesale cost, which equation and solution shows how to find the wholesale cost of the tv?
a 3w + 126 = 1452; w = 442; $442
b 3w = 1452; w = 484; $484
c 3w - 126 = 1452; w = 526; $526
d w + 126 = 1452; w = 1326; $1326

An equation where variables are used to represent known values—function notation true or false

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

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?