A company produces items in small batches the machinery needs to warm up before the atom can be produced the scatterplot shows the time needed to produce batches of different numbers of items

The answer is C since the y intercept is 20

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post