How many seconds will it take to get to 150 feet if you can run 11 feet per second

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.

Nine more than four times a number is the same as one less than twice the number. find the number?

Can someone tell me if this is perpendicular? !