Answer:
function goes from 4 to -5, soo the answer is -5
2 to 9 is the reduced ratio
The sum of 8 times a number and 7.....sum means add
8n + 7
is twice the number...is means equals
= 2n
so we have : 8n + 7 = 2n
The number of triangles is n-2
n= number of sides
8-2= 6 triangles
if applying this you won't have to draw any diagonals to
find the number of triangles just subtract 2 from the number of sides
hope this helps
