I'm sorry I suck at this triangle stuff. How many unique triangles can be made where one angle measures 60° and another angle is an obtuse angle? A.) 1
B.) 2
C.) More than 2
D.) None

I think it's more than 2 because some examples are 60,91,29 and 60, 92, 28 and 60, 93, 27.

third option: 6x+8

step-by-step explanation:

we can see that the given question is a sum of series and the values of n vary from 0 to 3

the first term will be:

when n=0, [(0)*x+2] => (0+2) => 2

when n=1, [(1)*x+2] => (x+2) => x+2

when n=2, [(2)*x+2] => 2x+2

when n=4, [(3)*x+2] => 3x+2

so adding up all the terms will give us:

=2+x+2+2x+2+3x+2

=x+2x+3x+2+2+2+2

=6x+8

so,

third option is the correct answer ..