Money in the account after** four years= 23850.372**

Given,** P = 20,000**

**R = 4.5%**

**T = 1**

**n = 4**

To calculate Compound interest, we will use formula **A = P(1 + r/n)^nt**

where p = principal amount,

r = rates of interest

n = number of times interest applied per time period

t = number of time periods elapsed

After putting values,

**A = 20000(1 + 4.5/4 )^(4*1)**

**= 23850.372**

To learn more about **compound interest **from the given link

brainly.com/question/24924853

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**Answer:**

**Increamental net income = $529,920-$478.610 = $51310**

**Explanation:**

Total sales revenue before the further processing = $22.9 * 20,900 =

$478.610

Total net sales revenue after the further processing = ($30.9 *12900)+($20,9*6900)-$12,900 = $529,920

Increamental net income = $529,920-$478.610 = $51310

**Answer:**

The interest rate on the car loan over the entire term of the loan is higher than the interest rate on her savings account.