What equals the expression if a=2.4 b=0.237 c=9.49. c-2ab

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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

Graph y = -|x| + 2. click on the graph until the correct one appears.