Answer:
the answer for me would be (p+q)+r
here is why I think so
q +pr ( the pr close-by together in maths means multiple so that's out) same goes for C and A it has a negative so that's not equal.
Formula for Riemann Sum is:

interval is [1,3] so a = 1, b = 3
f(x) = 3x , sub into Riemann sum

Continue by simplifying using properties of summations.

Now you have an expression for the summation in terms of 'n'.
Next, take the limit as n-> infinity.
The limit of

goes to 0, therefore the limit of the summation is 12.
The area under the curve from [1,3] is equal to limit of summation which is 12.
Answer: Never true. 24 times 12 is 288, however the LCM for them is 3. 8 times 20 is 160, however the LCM for them is 2.
Step-by-step explanation:
If you look at it by the fact that every number has a LCM of 1, and every even number has an LCM of 2, it is easy to take that and apply it to this question. Just factor in the numbers.
Answer:
61.9
Step-by-step explanation:
Look at the number next to the tenths place which in this case is 5.
When a number is greater than or equal to 5 you round up.
So 61.85 becomes 61.9