Timothy wants to estimate the mean number of siblings for each student in his school. He records the number of sibilings for each of the 75 randomly selected students in the school. What is the statistic?

7x+8y=-18, 4x-9y=-3 solve the system of equations

The level of co2 emissions, f(x), in metric tons, from the town of fairfax x years after they started recording is shown in the table below. x 2 4 6 8 10 f(x) 26,460 29,172.15 32,162.29 35,458.93 39,093.47 select the true statement.

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