James bought a sweatshirt at 45% off the regular price. If the sale price of the sweatshirt was $15.75 less than the regular price, what was the regular price of the sweatshirt?

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!