Write the series using summation notation.48 + 58 + 68 + 78 + 88 + 98
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use the Venn diagram below to find the number of elements in the region.
n((C ? B) - (A ? B))
A. 15 B. 11 C. 2 D. 5
Mathematics
Graph the unit circle using parametric equations with your calculator set to degree mode. Use a scale of 5. Trace the circle to find all values of t between 0° and 360° satisfying the statement.
?
?
A. 55°, 155° B. 60°, 300° C. 60°, 150° D. 210°, 150° E. 210°, 300°
Mathematics
Solve the system by substitution.x2 + y2 = 295x + 2y = 0
A. (2, 5), (-2, -5) B. (2, -5) C. (2, -5), (-2, -5) D. (2, -5), (-2, 5)
Mathematics
Solve the problem.Suppose that the total profit in hundreds of dollars from selling x items is given by 
Find the marginal profit at x = 6.
A. -$1200 per item B. -$500 per item C. -$400 per item D. -$600 per item
Mathematics