Answer:
A perfect score on a test
Step-by-step explanation:
Since the score gets subtracted for each wrong answer, if x=0 then then nothing would get taken away from the initial 80
For example, if someone says "5, on the hour", it means at 5:00
Answer:1/3 to the power of 3
Step-by-step explanation: 1/3 x 1/3 x 1/3 = 1/3^3
At the beginning, you begin with one whole that's been split into 25 pieces, or 25ths. Before you cover any of them up, you still have all 25, so you have 25 25ths, or, as a fraction,

. Next, you take away 3 of those 25ths, or

, which leaves you with

, or

.
Whatever you do to the numerator you must do to the denominator so 3 goes into 42 14 times so 3x14=42 2x14=28 so 2/3is equivalent to 28/42