I just want to know if I am right

If f(x) = 5х – 2 and g(x) = 2х + 1, find (f – g)(x).

Will mark brainliest, , and rate to only chrislaurencelle clarissa made a scale drawing of a rectangle. she used a scale factor of 3 to draw the new rectangle. how does the length of the new rectangle compare to the original? the length of the new rectangle is 3 times shorter than the original. the length of the new rectangle is 12 times shorter than the original. the length of the new rectangle is 3 times longer than the original. the length of the new rectangle is 12 times longer than the original.

Jack has to solve the problem 281-266.how would you tell him to solve the problem ? tell which strategy you would use ,and solve the problem.