An elevador starts on the 100th floor of a building it descends 4 floor every 10 seconds at what floor will the elevator be 60 seconds after it starts

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Plz hurry evaluate the expression a+b where a=8 and b=19

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?