The following table shows the low$-$end FICO score and the typical annual percentage rate$($APR$)$ received when purchasing a car with a $36-$ month loan for $$15,000.$

arameters to $2$ decimal places.

tage rate$($APR$)$

$\backslash$table$[[\backslash$table$[[$FICO$],[$Score$]],$APR $(\%)],[720,3\mathrm{.}7],[690,5\mathrm{.}13],[660,7\mathrm{.}3],[620,11\mathrm{.}01],[590,16\mathrm{.}04],[500,17\mathrm{.}19]]$

b$.$ State the correlation coefficient of the equation of best fit. What does it tell you about this equation?

c$.$ Use your equation to predict the APR of an individual with a $300$ FICO credit score.

d$.$ The minimum possible FICO credit score is $300$ and banks typically require at least a $500$ FICO credit score to be approved for a loan. Why might your prediction from c not be accurate?

$84$