On a school trip to a theme park, four busses each carry 105 students. 35% of the students are bringing their own lunch. 3/7 of the students are buying lunch when they get to the theme park. The teachers are worried that some students have not made plans for lunch. Find how many students have not made plans for lunch.

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?

What is x3+3x2−16x−48 divided by x−1?

Which inequality has a dashed boundary line when graphed ?