Relationship 1: y1 = x + 3
Relationship 2: y2 = 3x^2
Relationship 3: y3 = 3^x
4x - 57 + 3x + 25 + 2x - 3 + 4x + 3x + 15 = 540
16x - 20 = 540
16x = 560
x = 35
hope this helped
Because there is a variable
This function is consist of two subfunction with different domains.
f(-1) means x= -1 ≤ 1 and we will use subfunction -x+2 => f(-1)=-(-1)+2= 1=2=3
f(3) means x=3 > 1 and we will use subfunction x∧2-4x+6 =>
f(3)= 3∧2-4*3+6= 9-12+6=3
Good luck!!!