A $100 MP3 player is marked up by 10% and then marked down by 10%. What is that final price?

$99

Step-by-step explanation:

MP3 Player: $100

10% Mark up: $100/10= 10

Therefore, Mark-Up Price: $100+$10= $110

This was then Marked down by 10%.

Therefore,

10% Marked down: $110/10= $11

(We then take this away from the marked up price)

Hence, Final Price : $110-$11= $99

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°