1/2 of a number is three more than 1/5 of the same number. What is the number?

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?

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?