A military pilot fires a test missile whose path can be modeled by the equation fx=-(x-40)(x+2), where f(x) is the height of the missile in miles and x is the number of seconds since the missile was fired. Graph this function. What are the x-intercepts and what do they mean in the context of the problem? After how many seconds is the height of the missile the same as the initial height?

To factor 4x2-25, you can first rewrite the expression as:

Two trains leave a station on different tracks. the tracks make an angle of 130°, with the station as a vertex. the first train travels 100 km and makes its first stop at point a, while the second train travels 200 km and makes it first stop at point b. how far apart are the trains when both are at their first stop? round the answer to the nearest integer. a) 65 km b) 139 km c) 224 km d) 275 km

Me because i don't understand how to do it.: )