Find the value of y when x=-3 in the equation y=6x+8

Can someone answer these problems for me

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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)