Nora’s savings account has a balance of $3979. after 4 years, what will the amount of interest be 12% compounded semiannually?

The interest earned will be $2362.92.

Step-by-step explanation:

The compound interest amount function is A = P(1 + r/n)^(nt), where

P is the original principal, r is the interest rate as a decimal fraction, n is the number of compounding periods per year, and t is the number of years.

In this particular problem, the formula becomes:

A = $3979(1 + 0.12/2)^(2*4), where 2 represents the number of compounding periods if compounding occurs semiannually.

Evaluating this expression, we get:

A = $3979(1+0.06)^8, or

A = $3979(1.06)^8, or

A = $3979(1.594), or

A = $6341.92 (rounded off to the nearest cent)

The interest will be $6341.92 less the original principal, $3979:

I = $6341.92 - $3979 = $2362.92

answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

step-by-step explanation:

polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

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step-by-step explanation: