What is the x-intercept of the graph of the function f(x)=x^2-16+64

Recall that y = 0 at the x-intercept(s) of a function.

Thus, set f(x)=x^2-16x+64 = 0 and solve for x.

Notice that x^2-16x+64 is the square of x-8, so x^2-16x+64 = 0 = (x-8)^2 = 0.

Take the square root of both sides: √0 = √ [ (x-8)^2 ]

Then x-8 = 0, and x = 8. Note that this equation has TWO real, equal roots: {8,8}.

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

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step-by-step explanation: