Answer:
150
Step-by-step explanation:
f(x)=x²+1
f(f(x))=(x²+1)²+1
=x⁴+1+2x²+1
=x⁴+2x²+2
choose (2)
Since x represents the year, year 15 will be 15 years.
Plug in "15" as your "x"
y = -2(15)^2 + 36(15) + 6
15^2 = 225 (Exponents come before multiplication)
y = -2(225) + 36(15) + 6
y = -450 + 540 + 6
y = 90 + 6
y = 96
<em>The answer is B</em>
I ain't Joseph but what's wrong?
