Presley is organizing the school book sale. each stall will have 40 books on the shelf and 2 boxes of books with b books inside. presley also has 200 books in inventory to refill the shelves as books sell. this situation can be written as the following expression:
40s + (2b)s + 200
how many books should presley have ready if she plans to open 8 stalls and have 12 books in each box?

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota