Given that k is a positive integer. find, in terms of k, an expression for sn, which is the sum of the integers from 2k to 4k inclusive

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.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?