Final answer:
To find f(2), you substitute '2' for 'x' and evaluate the function. To solve for a value of x where f(x) = -4, set the function equal to -4 and solve. For a quadratic equation, the quadratic formula is used to find the possible values of x.
Step-by-step explanation:
To find f(2), we need the specific function f(x), which isn't provided. However, generally speaking, you would substitute '2' for 'x' in the function and evaluate. For example, if f(x) = x + 3, then f(2) = 2 + 3 = 5.
To find a value of x for which f(x) = -4, you would set the function f(x) equal to -4 and solve for x. For instance, if f(x) = x + 3, then you would solve the equation x + 3 = -4, leading to x = -7.
When you have a quadratic equation like x² + 0.00088x - 0.000484 = 0, you apply the quadratic formula:
x = −b ± √(b² - 4ac) / (2a)
Where a, b, and c are coefficients from the quadratic equation ax² + bx + c = 0. In this case, a = 1, b = 0.00088, and c = -0.000484. Calculate the discriminant (√(b² - 4ac)) and then evaluate for both the '+' and the '-' sign in the numerator to find the two possible values of x.