Which expression represents the composition g(f(x)) for the functions below?

f(x) = –3x2
g(x) = 3x

–9x3

9x2

–9x2

–27x2

Which of the following is true for the relation f(x)=2x^2+1

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36