contestada

On a trip, you had to change your money from dollars to British pounds.
You got 560560 pounds for 800800 dollars.

Which is a unit rate that describes the exchange?

Respuesta :

luis262
we can start with finding a function which give us British Pounds(P) from U.S. Dollars(d) after the exchange rate(x):
[tex]P(d)=dx[/tex]

so now we plug in what we know, total British Pounds(560560) and US dollars(800800) and we get:
[tex]560560=800800x[/tex]

We divide 560560 by 800800:
[tex]x=0.7[/tex]

so the exchange rate is €0.70 for $1