Akeyboard is on sale for $676. if this price represents a 20% discount from the original price, what is the original price to the nearest cent?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

With finding limits of multi variable !

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?