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*

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled