Help??? LOL?

A... Howie would pay back 1.04d which is the principal, d, plus the interest .04.  If your loan was for 1 dollar, then you'd owe 1.04 which is 1.04x1. 

C... 200 x 1.04 = 208

Edit to add: The Anon poster says top question answer B simplifies to the same, but it does not.  Again using my example of 1 dollar, 1.00 + 1.04 is 2.04.  The answer is A. 

 2) 

 Howie works to get a 1-year loan of dollars, d, with 4% simple interest rate. 

 Which expression can be used to find 

 the total amount that must be repaid on this loan? 

 Select the two choices that apply. 

 A 1.04 d           ✓

 B d + 0.04 d     ✓

 C d + 1.04d 

 D d + 0.4 d  3)  If Howie's loan is for $200, what is the total amount of money  Howie would pay back at the end of one year?  A $4  B $8  C $208     ✓ D $280

Howie needs to pay back the loan plus 4% of what he owes tacked on as interest. 4% is .04 x whatever. 

If Howie owed 1d he would also owe (.04 x 1d). Putting the two together gets you expression B. It simplifies to expression A.

Expression C gives you two copies of d, expression D is too large a multiplier.

For the second question, plug $200 into your winning expression.