Over the past five weeks the average daily temperature in wellington has dropped 40 degrees in fahrenheit. what is the average temperature change per week

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Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)