!! 10 points The door on a model building is 2 inches tall. The door on the actual building is 8 feet tall.
What was the scale used?
1:12
1:24
1:4
1:48

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

We just started the introduction into circles and i have no idea how to do this.

Find the value of x. round the length to the nearest tenth