For a decreasing function, how will the right hand sum compare with the exact area under the curve, over a given interval? The right hand sum will be .
A-an underestimate
B-an overestimate
C-exactly right
D-there is not enough information given to determine

A-an underestimate

Step-by-step explanation:

If you look at the image below, the right-hand-sum sits way below the curve for a decreasing function.

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d