Question

PLZ CHECK MY ANSWERS:
1. Classify the following polynomial by degree and number of terms: 2x^4 - 4x^2 + x
My Answer: 4th degree polynomial
2. What is the maximum times a third degree function's graph could cross the x-axis?
My Answer: 3 times.
3. If a function is even and contains the point (2,21), what other point must it contain?
My Answer: (-2,21)
4. What is the range of the polynomial function f(x)= x^3 - 6x + 5?
My Answer: All real #s
5. What is the y-intercept of the function g(x)= -(x-2)(x-1)^4(x-3)^2?
My Answer: 18
6. f(x)= -2x^7 + 7x^3 - 7 (even or odd?)
My Answer: neither

Answer 1

all are correct

Answer 2

having doubts in any ?

Answer 3

1) 4th degree and a trinomial (3 terms)
2) your ans is correct