The data below represents how much people use their air conditioner and what their electricity bill is.  Write the linear equation that represents this relation to predict how much time people are using their air conditioner. Air conditioner use (hrs)    bill amount (dollars) 38    225 19    145 8    185 15    198 24    215 18    225 6    101 14    156 19    255 21    197 17    185 20    245 24    158 36    254 17    321 8    185 0    26 22    235 13    153 62    521 48    452 22    251 17    178 15    95 28    253 35    321 51    412 44    125 19    321 28    112 35    253 46    152 33    412 22    302 18    119 19    205 41    136 18    256 7    145 10    352 52    125

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