An object travels along the x-axis such that its position at time t is given by the function x(t) = 7. How many times greater is the instantaneous speed of the object at t = -2/(t+1) than the average speed of the object over the interval 1<t<7?

x = 25

step-by-step explanation:

a^2+b^2=c^2

7^2+24^2=c^2

49+576=625

sqrt625=25

x=25

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

391.6 is the correct answer