Which word best describes the degree of overlap between the two data sets

a) none
b)high
c)moderate
d)low

Ineed asap.i cant understand this question i need someone to me right away

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Asap describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x)=-5.8sin x. g(x)=sin x. a: vertical stretch by a factor of 5.8, reflection across y-axis. b: vertical stretch by a factor of 5.8,reflection across x-axis. c: horizontal stretch by a factor of 5.8, reflection across x-axis. d: horizontal stretch by a factor of 5.8 reflection across y-axis.