An item is regularly priced at $80 . it is on sale for 25% off the regular price. what is the sale price?

$60 because 25% of 80 is 20. so 80 subtract 20 equals $60.

80 × 25% = 20

For any percentage question, simply type the number and percentage and times them to get the answer! :)

The sale price of the item is $60.

Hope that helped! c:

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .