Jessica bought a kitten from a pet store and recorded its weight at various times over a 6 month period. She found the linear model that best fit the data was w = 0.45n + 0.12, where n is the number of months since Jessica bought the kitten and w is the kitten's weight in kilograms.

Complete the sentence using the numbers below.

0.12 , 0.45 , 0.57

According to the model, the kitten gained approximatelykilograms every month and the kitten weighed approximatelykilograms when Jessica bought it from the store.