Answer:
C_ 3.67
Step-by-step explanation:
The right-sum and left-sum are kinda opposite to each other when it comes to estimating the area value of the actual curve. As in...
If the right-sum is over estimating, then the left-sum must be underestimating.
If the left-sum is over estimating, then the right-sum must be underestimating.
So our actual value must lie somewhere between the value calculated by the right-hand-sum and the left-hand-sum
The question gave left-sum being 3.65 and right-sum being 3.683, so our value must lie between two two numbers. The only answer choice that is between 3.65 and 3.683 is 3.67.
