Find the area of all of these. These are all practices, so if you get them all right, I will make you brainliest!

What is the solution of the systems of equations? y=2/3x+3 x=-2

Find the common ratio of the sequence. -4, 8, -16, 32, a: -12b: -2c: 12d: -1/-2

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.