a penguin walks south. It completes the first 1/2 mile in 1/5 hour and continues walking at the same rate. What is the penguin's speed in miles per hour? show your work.

Let’s set one hour as the variable h.
We can write that 1/2 mile = 1/5h.
Your goal is to turn 1/5 h into just h. You can achieve this by multiplying both sides of the equation by 5.
h= 5/2 miles, or 2 1/2 miles. So the penguin would walk at the speed 5/2 miles per hour.

An =800 *an-1 an a1=14