The polynomial

has a unique root,

, for any

.
Hence

is a polynomial with roots

and
Hundredth: 142
Hundred: 100
Ten: 140
Tenth: 142<span />
Answer:
7500. There are 100 centimeters in a meter therefore 75 meters have 7500 centimeters.
Same case as Pablo's, more or less.
a = price for the desktop
b = price for the laptop
we know the laptop is 150 bucks more than the desktop,
b = a + 150.
how much is 7% of a? (7/100) * a, 0.07a.
how much is 9.5% of b? (9.5/100) * b, 0.095b.
total interests for the financing add up to 303,
0.07a + 0.095b = 303.

how much was it for the laptop? well b = a + 150.