Belinda needs $2400 fast. She has the option of borrowing the $2400 for 5 days at an APR of 500% or borrowing the $2400 for 5 days with a fee of $180. She realizes that neither scenario is very good, but she wants to choose the option that is best for her. Help Belinda decide which is the "better" deal. Part IV: What is the APR of the $2400 loan for 5 days for a fee of $180?

Part V: Which is the "better" deal: borrowing the $2400 for 5 days at an APR of 500% or borrowing the $2400 for 5 days with a fee of $180?

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.