One of the product rules for exponents was used.

Or, you can consider that the definition of an exponent and the associative and commutative properties of multiplication were used.
False. You only flip when the number you are multiplying/dividing is negative.
B.
For all 3 to work together, they can paint 1 room per hour.
C.
John can paint a room at 1/4 of a room per hour.
Rick can paint a room at 1/5 of a room per hour.
Together they can paint a room at a rate of 9/20 of rooms per hour.
D.
1 = 1/4j + 1/5r + 11/20m (john, rick, molli)
E.
The least common denominator is 20
F.
1 = 1/4(0) + 1/5(0) + 11/20x
1 = 0 + 0 + 11/20x
1 = 11/20x
x = 1/(11/20)
x = 1 9/11
It will take Molli 1 hour and 49 minutes (60 x 9/11) to paint the room alone.
Answer:
<u><em>B</em></u>
Step-by-step explanation:
- <em>4/1 * 1/3</em>
- <em>4 * 1 = 4</em>
- <em>1 * 3 = 3</em>
- <em>4/3; 1 1/3</em>
C. Reflected over the y-axis and translated up 1 unit