E) none of the above
Use the Midpoint Rule with n = 4 to approximate the area of the region bounded by the
graph of and the x-axis over the interval [ ].
A microbiologist must prepare a culture medium in which to grow a certain type of
bacteria. The percent of salt contained in this medium is given by where
and are the nutrient solutions to be mixed in the medium. For the bacteria to
grow, the medium must be 13% salt. Nutrient solutions and cost $1, $2, and $3
per liter, respectively. How much of each nutrient solution should be used to minimize
the cost of the culture medium?