Solve the problem.Approximate the area under the graph of f(x) = ex + -2 from -1 to 4 by partitioning the interval into 4 subintervals of equal length and choosing t to be the left endpoint. Round to the nearest hundredth.
A. 27.22
B. 108.88
C. 68.88
D. 17.22
Answer: D
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Perform the indicated operation.Express 
as a power of 2.
A. 22 B. 2-6 C. 2-2 D. 2-4
Add like terms, if possible, and write the result in descending powers of the variable.-5m6 - 8m6
A. -13m12 B. -13m6 C. -78m D. Cannot be simplified
Simplify the expression.8 + 7(10 - 7m)
A. 78 - 7m B. 78 + 49m C. 70 - 49m D. 78 - 49m
A large region of forest has been infested with gypsy moths. The region is roughly triangular, as shown in the figure on the next page. From the northernmost vertex A of the region, the distances to the other vertices are x = 25 miles south and 10 miles east (for vertex B), and 20 miles south and 28 miles east (for vertex C). Use a graphing utility to approximate the number of square miles in this region.
?
?
A. 250 mi2 B. 280 mi2 C. 260 mi2 D. 290 mi2 E. 270 mi2