Question

#24 and #25 please help me

Answer 1

24).
a).  The equation is

           Balance in my account = 12.5 m  + 100 .

The graph is a straight line with slope = 12.5 and y-intercept = 100.
'm' is the number of months after you start this savings plan.

b).  The part of the Real Estate ad that tells us the cost of land on Mars is cut off.
However much 10 acres will cost, put that number into the equation where it
says "Balance in my account", and solve the equation for 'm'.

25).
a).  It's easy to find four points.  Just let 'n' be 3, 4, 5, and 6, and for each one,
use the formula to calculate what  'S' is.  Yes, if you plot them, they'll all fall in
a straight line.

b).  No.  The value  n = 3.5 does not make sense in the context of the problem. 
We're talking about polygons with 'n' sides, and it's very hard to draw or imagine
a polygon with 3.5 sides.