C i think, i hope that helps
Answer:
f(-2)=-2
Step-by-step explanation:
we know that
x -----> is the independent variable or input value
f(x) ---> is the dependent variable or output value
f(-2) is the value of the function f(x) when the value of x is equal to -2
so
For x=-2
Looking at the graph
f(-2)=-2
For an input value of -2 the output value is -2
Answer: Angle 1 is 36
Angle 2 is 54
Step-by-step explanation:
x+18+3x=90
4x+18=90
4x=72
x=18
18+18=36
18*3=54