I think the answer is 18.7
SAS stand for side-angle-side. In order to know that these two triangles are similar you need to find the measure of side GH and MN
1.69 is 1.3 to the second power
The value of track is given by:
V(x)=32500(0.92)^x
when x=2
V(2)=32500(0.92)^2=$27508
when x=3
V(3)=32500(0.92)^3=$25,307.36
Difference in values will be:
27508-25307.36
=$2,200.64
3a(4a^2 - 5a + 12)=12a^3-15a^2+36a (C)
