With some simplification,
cos⁻¹(x) - 5 cos⁻¹(x) - π/3 = 2π/3
becomes
-4 cos⁻¹(x) = π
or
cos⁻¹(x) = -π/4
However, the inverse cosine function has a range of 0 ≤ cos⁻¹(x) ≤ π, so there are no solutions to this equation.
I can’t see where they are
The answer would be C because they say if 3 new students arrived each year.
Answer:4x^3-2x^2+20x-10
Step-by-step explanation: