Is the estimated coefficient of the price of pizza statistically significant at the 5% level? You can use either the t-test or the P-value, not both since both gives the same results (read my lecture note on testing hypothesis). What does it mean when you reject the null hypothesis?

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

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Solve this system of equations. 12x − 18y = 27 4x − 6y = 10