What is the domain of sine and cosine functions? A) [0,2π)
B) (-∞, ∞)
C) [-1, 1]
D) [-2π, 2π]

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?