The unit price for of for ​$ is ​$ nothing per . The unit price for of for ​$ is ​$
nothing per . The unit price for of for ​$ is
▼
less than
greater than
equal to
the unit price for of for ​$. ​So,
▼
5 kilograms of pellets for $17.50
3 kilograms of pellets for $11.25
is the better buy.

Cis your correct answer

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.

Find the equation for the area of a circle and divide that by 2