NO LINKS! (brainliest if correct) subject: math:)

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate. in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30