Please help me solve for 'b', I really, really need help! I'll mark you brainliest!

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29