Solve and steps on how you did them

16. About as easy as any is to consider the value of each deposit at the end of the 3-year period.
.. 1st deposit: 1800*1.03^3
.. 2nd deposit: 1800*1.03^2
.. 3rd deposit: 1800*1.03
Total of all of them: 1800*1.03*(1 +1.03*(1 +1.03)) = 5730.53 . . . . (G)

17. The graph needs to go through the point (40, 40*12.50) = (40, 500).
Only graph A does that.

The lateral side of a triangular pyramid is a triangle. in order to increase the lateral surface area, the slant height and the height should be altered