$($Please check my answers and let me know if they are correct$)$ D$$e Trader opens a brokerage account and purchases $100$ shares

of Internet Dreams at $$52$ per share. She borrows $$2,800$ from her

broker to help pay for the purchase. The interest rate on the loan is

$7\%.$

Required:

a$.$ What is the margin in D$$e$\text{'}$s account when she first purchases the

stock?

b$.$ If the share price falls to $$42$ per share by the end of the year,

what is the remaining margin in her account?

c$.$ If the maintenance margin requirement is $30\%,$ will she receive a

margin call?

No

Yes

d$.$ What is the rate of return on her investment? $($Negative value

should be indicated by a minus sign. Round your answer to $2$

decimal places.$)$