Use the graph below to evaluate, f(1): A f(1)=4 B f(1)=3.5 C f(1)=2 D f(1)=3

F(1) would be the y value of where the line is at x =1

At x = 1, the line is at y =3

The answer is D. F(1) = 3

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation:

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