Answer:
answer : C
Step-by-step explanation:
Answer:
-3 ≥ x ≥ 9
Step-by-step explanation:
The domain are the x-values of every point in your graph. Since it a continuous domain, it'll be represented with ≥. Your two extremities are -3 and 9. Therefore, your domain is -3 ≥ x ≥ 9.
The speed is 630mp/s I think. Because you have to multiply Wavelength by Frequency to get true speed
Correct answer; A right angle
