Given:
Time spend on every 2 questions = 5 minutes.
To find:
The missing values for the given table.
Solution:
Let x be the number of questions and y be the number of minutes.
We have,
Time spend on every 2 questions = 5 minutes
Time spend on 1 question = 
minutes
Time spend on x questions = 
minutes
Now,
For x=0,
For x=1,
For x=2,
For x=3,
For x=4,
Therefore, the required table is
Questions : 0 1 2 3 4
Time (minutes) : 0 2.5 5 7.5 10
(1 + 5) + 2 = 2 + (1 + 5) - commutative property of addition
5(2x + 3) = 10x + 15 - distributive property
(2 • x) • 7 = 2 • (x • 7) - associative property of multiplication
(3 • x • 4) = (3 • 4 • x) - commutative property of multiplication
(4 + 2) + 6 = 4 + (2 + 6) - associative property of addition
9/2x-15/2 that is the answer
Step-by-step explanation:
Well, as a fraction, it would be 13/5 because 4 friends + him = 5. 13/5=2.6.
2.6 also equals 3/5. So the answer is 2.6 or 2 3/5.
Hope it helped
