Answer:
there are 30 boys in the orchestra
4
Step-by-step explanation:
(8)+2=4
16=4
16=4•4
16=16
4x²+x+5.
5x²+4x+1-(X²+3x-4).
5x²+4x+1-x²-3x+4.
5x²-x²+4x-3x+1+4.
x = -2
f(x)= 5(x-2)
since, f(x)= -20
-20 = 5(x-2)
x-2 = -20/5
x = - 4 + 2