Which function has real zeros at x = 3 and x = 7?

f (x) = x2 + 4x - 21

O f (x) = x2 - 4x - 21

Of (x) = x2 - 10x + 21

O f (x) = x2 - 10x - 21

У - бх - 11 - 2x - Зу = - 7

Find the inverse of y = 2x squared?

Find the difference between the actual and the estimated values of 55 - 21

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find the variation constant and an equation of variation where y varies directly as x and y=45 when x=5