How do i multiply a 2-digit number by 20 using a number line?

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. the douglas-fir is a conifer tree that grows in the taiga biome. it has an average height of about 70 feet, and its wood is an important source of lumber.

3. solve the given inequality and graph the solution on a number line.

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r