(13x2+9x-4)-(12x2-2x+6)
add or subtract the polynomials

Step-by-step explanation:

Remove the brackets and multiply the minus sign through all the numbers in the second polynomial

Rearrange in the highest order

Simplify

Hey there!

So, the questions stated that it wanted you to put the values in a specific format.

f(x)= P(1+r)^x

P= what is in the account R= Rate

So, we know that the account as a 4% annual interest rate. In a decimal form, that is 0.04.

Now, we can plug all the numbers in.

500(1+0.04)^x

Or, 500(1.04)^x

All we need to do to find the savings after 5 years is plug in 5 for x into a calculator.

500(1.04)^5= 608.3264512, we can round it to 608.

So, the correct answer is f(x)= 500(1.04)^x, $608

I hope this helps!

~kaikers