Alan, Selena, and Tiki simplify the expression 5-2(x+2) the results are shown Alan: 9-2x Selena:1-2x Tiki: 3x+6

PLEASE HELPPP

I know that answer but i don't know what the other people did wrong.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.