We define the variables: x = dimes y = nickels z = pennies We write the system of equations: 0.1x + 0.05y + 0.01z = 1.10 y = 3z x = z-2 Solving the system of equations we have: x = 3 y = 15 z = 5 Answer: The number of nickels and pennies is: nickels = 15 pennies = 5
This answer is pretty simple. you see (5,-8) and (20,y). well the 20 is 4 times the 5 on the x value so multiply the y value by 4 to get your answer which Y=-32 in the 2nd corrdenants.
Be careful you don't add unlike terms together (e.g. x^2 and x cannot be added or subtracted together). <span>Be careful you don't mistake the 2 in x^2 as another number. Same for x^3, x^4. etc.</span>
