You put some money in a bank account one year ago. You have not done anything with it since. The bank takes out a low balance fee of $0.25 each month. After 8 months, you had $28 in the account. Choose the equation that best shows the money in your bank account over time. CLEAR CHECK Balance=−0.25⋅Months Balance−28=−0.25(Months−8) Balance−8=−0.25(Months−28) Balance−28=−0.25(Months+8)

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