identify a horizontal or vertical stretch or compression of the function f(x)=x^2 by observing the equation of the function g(x)=(4x)^2

Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis