Provide an appropriate response.Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation. 
+ 
+ 
+ . . . + 
A. 
B. 
C. 
D. 
Answer: B
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Simplify the expression.-
A. 
B. -
C. -
D. -7x8
Find the unknown length in the right triangle. If necessary, approximate the length to the nearest thousandth.
A. 115 km B. 57.5 km C. 11.5 km D. 10.724 km
Graph the function.f(x) = ex + 2
A. 
B. 
C. 
D. 
Solve the problem.Barges from ports X and Y went to cities A and B. X sent 30 barges and Y sent 8. City A received 21 barges and B received 17. Shipping costs $220 from X to A, $300 from X to B, $400 from Y to A, and $180 from Y to B. $8760 was spent. How many barges went where?
A. 17 from X to A, 17 from X to B, 4 from Y to A, and 4 from Y to B B. 15 from X to A, 15 from X to B, 6 from Y to A, and 2 from Y to B C. 19 from X to A, 11 from X to B, 2 from Y to A, and 6 from Y to B D. 21 from X to A, 9 from X to B, 0 from Y to A, and 8 from Y to B