Suppose you pay $21 for a pair of shoes that was originally $30. what was the percent of decrease in price for the shoes? set up an equation, arrive at your answer, and check your work. then clearly state your answer. *show work*

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?

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me