Answer:
Colin has <em>8 sheets </em>left for his third class.
Step-by-step explanation:
Given that:
Total Number of pieces of papers = 
Number of pieces of papers used for 1st class = 5 fewer than half of the pieces in the pad
Writing the equation:

Also, Given that number of pieces of papers used for the 2nd class are 2 more than that of papers used in the 1st class.

Now, number of pieces of papers left for the third class = Total number of pieces of papers in the pad - Number of pieces of papers used in the first class - Number of pieces of papers used in the first class

So, the answer is:
Colin has <em>8</em> <em>sheets </em>left for his third class.
It will take 40 hours for the water tank to become empty.
Explanation:
Divide 30 by 0.75 (equivalent to 3/4).
Answer:

Step-by-step explanation:
1) Expand by distributing terms.

2) Simplify 4*3x to 12x.

3) Simplify 4*2y to 8y.

<u>Therefor, the answer is </u><u>12x + 8y.</u>
Answer:
These numbers are the Powers of Two
Beginning with term #1 = 2, the next term is always 2 times the PRECEDING term.
Second term is two squared, or 2 times 2, namely four.
Third term, multiply that four by two, giving eight, also known as two cubed.
Fourth term is twice as much, namely sixteen.
Just keep on doubling!
Step-by-step explanation: