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use δabc shown below to answer the question that follows: (goes with picture)

which of the following must be given to prove that δabc is similar to δdba?

a. segment ad is an altitude of δabc.
b. segment cb is a hypotenuse.
c. segment ca is shorter than segment ba.
d. angle c is congruent to itself.

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.