Let
n--------> number of monthly payments
x-------> amount of monthly payments with Kristal's credit card
y-------> charges for every payment made with a credit card
T-------> total cost of the refrigerator
we know that
\(n=16\\x=\$112.75\\ y=\$1.25\\\)
the total cost of the refrigerator is equal to
\(T=n(x+y)\)
substitute the values in the formula
\(T=16*(112.75+1.25)\)
\(T=16*114\)
\(T=\$1,824\)
therefore
the answer is
the total cost of the refrigerator is equal to \(\$1,824\)
