Write an equation that represents a perpendicular line to y=-3x+5

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)