8. Christina and Youssef work in office buildings that are 80 feet away from each other. From the
top of her office building, Christina notices that the angle of elevation to the top of Youssef's
building is 45°. The angle of depression from Christina to the base of Youssef's building is 56º.
Find the height of Youssef's office building, rounded to the nearest tenth of a foot.

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d

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be