I’m pretty sure the correct answer is B
Using compound interest, it is found that:
- The equation is:
- After 3 years, he has $4,252 in the account.
- After 10 years, he has $6,608 in the account.
<h3>What is compound interest?</h3>
The amount of money earned, in compound interest, after t years, is given by:
In which:
- A(t) is the amount of money after t years.
- P is the principal(the initial sum of money).
- r is the interest rate(as a decimal value).
- n is the number of times that interest is compounded per year.
- t is the time in years for which the money is invested or borrowed.
In this problem:
- Jack was given $3520 from his grandma, hence P = 3520.
- The account pays 6.5% interest rate that is compounded annually, hence n = 1, r = 0.065.
Hence, the equation is:
After 3 and 10 years, respectively, the amount in dollars in the account are given by:
More can be learned about compound interest at brainly.com/question/25781328
1,454 I believe that is the correct answer
Inequalities are used to describe unequal expressions.
The inequality of the shaded region is:
The boundary line is given as:
Divide through by 2
Make y the subject
The shaded region is above the boundary line (see attachment)
This means that, we make use of the greater than sign (>)
So, we replace = with >
As a standard form, we have:
Hence, the inequality of the shaded region is:
Read more about inequalities at:
brainly.com/question/20382422