Answer correctly!

which factor inspired the resurgence of the kkk in the 1920s?

a. increased immigration from eastern europe and asia
b. pseudo-scientific racism
c. the film the birth of a nation
d. all answers are correct.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Which one is true about the hexagons ?

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true