Find partial sum of each series

2.30+0.4-0.88+1.33 can u explain the answer to this why the answer is 3.15

which  best  describes the transformation from the graph of  f(x) =  x2  to the graph of  f(x) = (x  – 3)2  – 1?   left 3 units, down 1 unitleft 3 units, up 1 unitright 3 units, down 1 unit  right 3 units, up 1 unit

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?