Give me an example of a permutation

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

In a column proof the right column states your reasons

Which rule describes the composition of transformations that maps ajkl to aj"k"l"? ro. 900 o to, -2(x, y) to, -20 ro, 900(x, y) ro, 9000 t-2. o(x,y) t-2, 00 ro, 900(x, y)