What is the image of the point (5,−3) after a rotation of 90∘ counterclockwise about the origin?

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32

What would the rule be for the reflection of y=-3

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour. what is the cyclist average rate for the round trip in miles per hour ?