If f(x) =4x2 - 8x - 20 and g(x) = 2x + a, find the value of a so that the y-intercept of the graph of the composite function (fog)(x) is (0, 25).

The possible values are a = -2.5 or a = 4.5.

Step-by-step explanation:

Composite function:

The composite function of f(x) and g(x) is given by:

In this case:

So

Value of a so that the y-intercept of the graph of the composite function (fog)(x) is (0, 25).

This means that when . So

Solving a quadratic equation, by Bhaskara:

The possible values are a = -2.5 or a = 4.5.

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step-by-step explanation:

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answer: its the third option.

step-by-step explanation:

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