A recipe asks that the following three ingredients be mixed together as follows: add 1
2
of
a cup of flour for every 1
2
of a teaspoon of baking
soda, and every 1
4
of a teaspoon of salt.
Which of the following rates are unit rates
equivalent to the ratios shown above? Select two
that apply

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.

The answer is or,ur welcome