Charlie runs at a speed of 3 yd./s about how many miles per hour does charlie run

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In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .