Total payments 437×60=26,220
Interest paid
26,220−17,550=8,670
Substitute y = -x into the first equation:
-8x - 7(-x) = -5
-8x + 7x = -5
-x = -5
x = 5
Substitute x = 5 into y = -x
y = -(5)
y = -5
Answer: x = 5, y = -5
An exponent is the number or value being raised to a power.