6. The trajectory of an object that is thrown
from the top of a building with an initial
velocity of 50 meters per second is modeled
as h=-4.912 + 501 + x, where h is the height
in meters of the object at a given time, t is
the time in seconds, and r is the height of the
building in meters. If the object hits the
ground after 21 seconds, what is the
approximate height, in meters, of the
building?

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Which equation is equivalent to the given expression? -(1/2y+1/4) a. -1/4(1+2y) b. 1/4(2y-1) c. -2(1/4y-1/8) d. 2(1/8-1/4y)