Suppose that f(t) is continuous and twice-differentiable for t≥0. further suppose f″(t)≥9 for all t≥0 and f(0)=f′(0)=0. using the racetrack principle, what linear function g(t) can we prove is less than or equal to f′(t) (for t≥0)?

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.