Evaluate (f-g)(3t) for f(x)=x²+1 and g(x)=x-4

F(x)=x²+1

g(x)=x-4



f(x)-g(x)

=x²+1-(x-4)

=x²+1-x+4

=x²-x+5



Therefore:

(f-g)(3t)

=(3t)²-3t+5

=3²t²-3t+5

=9t²-3t+5

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !