The cost of first-class postage in the united states increased approximately 5.4% in january of 2006 to 39 cents. what was the pre- january cost of the first-class stamp? round your answer to the nearest penny. a. $0.30 c. $0.35 b. $0.33 d. $0.37

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?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?