02.02.4
the table below shows the number of days, y, needed to complete a project as a function of the number of full-time staff, x,
working on the project. which rational function best models the data in the table?

justin bieber ml.

40% off the regular price is the correct answer.

step-by-step explanation:

the line of

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4