Which functions graph has a y-intercept of 4? A. y=2x+4
B. y=1.5(4)x
C. y=2.5(4)x+1.5
D. y=2.5(4)x+1

Which is the completely factored from of xy^3-x^3y

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?