Suppose that a volcano is erupting and readings of the rate r(t) at which solid materials are spewed into the atmosphere are given in the table. The time is measured in seconds and the units for r(t) are tones (metric tons) per second.

(a) Give upper and lower estimates for the quantity Q(6) of erupted materials after 6 seconds.
(b) Use the Midpoint Rule to estimate Q(6).

Transcribed Image Text:

r(1) 60 54 10 24 46 36 2.