Answer:6x^3+19x^2+12x-5
Step-by-step explanation:
(2x^2+3x-1)(3x+5)
Clearing brackets we have
6x^3+10x^2+9x^2+15x-3x-5
Adding like terms we have:
6x^3+19x^2+12x-5
A sample size of 60 is required.
We use the formula
We first find the z-score associated with this level of confidence:
Convert 99% to a decimal: 99/100 = 0.99
Subtract from 1: 1-0.99 = 0.01
Divide by 2: 0.01/2 = 0.005
Subtract from 1: 1-0.005 = 0.995
Using a z-table (http://www.z-table.com) we see that this value is equally distant from 2.57 and 2.58; therefore we will use 2.575:
For A I think it should be 0.16 you just have to look at the chart
You did NOT list the interest rate so I can't calculate anything.
However, if you look at the attached formula,
principal = $650
n = 52
years = 8