Alexandra purchased a new car in 2005 for $16,500. The value of the car has been depreciating exponentially at a constant rate. If the value of the car was $9,800 in the year 2008, then what would be the predicted value of the car in the year 2018, to the nearest dollar?

c

c

c

c

c

c

c

cc

c

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

i believe it is b and c. (side note, i got the same computer from k-12 lol i’m in 8th grade and this is my first year, will it get

step-by-step explanation:

2y+y=5

add 2y and y